Why Great Interviews Still End in Rejection

You walked away feeling good.

The conversation flowed naturally. The interviewer seemed engaged. They smiled, took notes, asked thoughtful follow-up questions, and spent extra time explaining the team.

Maybe they said:

• “Your background is really impressive.”

• “I think you’d work well with this group.”

• “You have exactly the kind of experience we need.”

• “You’ll hear from us soon.”

• “The next step would be…”

You let yourself feel hopeful.

Then the rejection arrived.

Now the interview no longer makes sense.

Was the interviewer pretending?

Did you completely misread the situation?

Did you say something wrong without realizing it?

Was the company ever seriously considering you?

Possibly—but not necessarily.

Here is the distinction that makes this experience easier to understand:

An interview can go well without you being selected.

That is not corporate doublespeak. It is a consequence of how hiring decisions work.

A good interview means you created a positive interaction and presented credible evidence of your ability.

An offer means that, after considering the available candidates, constraints, evidence, preferences, and business conditions, the organization chose you.

Those are connected outcomes.

They are not identical outcomes.

A Good Interview Is Not the Same as Winning the Comparison

Candidates often evaluate an interview as a standalone performance:

Did I answer the questions well?

Hiring teams usually evaluate it comparatively:

Based on everything we learned, which candidate best matches what we need right now?

You may have answered well.

Another person may also have answered well.

That person may have had:

• More direct industry experience

• Experience with the company’s exact technology

• Stronger evidence in one critical competency

• A background that complemented the existing team

• Prior experience with the hiring manager

• Internal knowledge of the organization

• Greater availability

• Compensation expectations closer to the approved range

• A clearer example of solving the team’s immediate problem

Your interview does not become bad because another candidate provided a slightly stronger match.

Hiring is not always a pass-or-fail examination.

Sometimes several people pass, but only one position exists.

That is one of the hardest parts of interviewing: you can demonstrate that you are capable without proving that you are the only reasonable choice.

Why Positive Interview Signals Can Be Genuine

Candidates frequently ask:

“Why did they seem so interested if they weren’t going to hire me?”

Because they may actually have been interested.

An interviewer can genuinely:

• Like you

• Respect your background

• Enjoy the conversation

• See you as capable

• Believe you could perform the job

• Recommend that you continue

• Want to hire you under different circumstances

And you can still lose the final decision.

The interviewer may not be the sole decision-maker.

They may submit positive feedback while another interviewer identifies a concern. The hiring manager may prefer someone else. The team may revise what it needs. A senior leader may favor an internal candidate. The position may be changed or paused after your conversation.

Positive behavior is therefore evidence that the interaction was positive.

It is not a binding offer.

This does not mean you should distrust every friendly interviewer. It means you should interpret friendliness accurately.

Warmth tells you how the conversation is going. It does not tell you how the entire hiring decision will end.

Interviewers Are Often Trained to Keep the Conversation Positive

A professional interviewer should help candidates feel comfortable enough to provide meaningful answers.

That often includes:

• Smiling

• Maintaining eye contact

• Encouraging elaboration

• Acknowledging strong examples

• Describing the company positively

• Answering questions enthusiastically

• Explaining possible next steps

These behaviors help create a fairer and more useful conversation. A hostile or unreadable interviewer may prevent the candidate from demonstrating what they actually know.

The U.S. Office of Personnel Management describes structured interviews as assessments designed to measure job-related competencies through systematic questioning. In a well-designed structured process, candidates are asked consistent questions and evaluated using common standards rather than being judged only on conversational instinct.

That means the interviewer can be encouraging while still scoring your answer against predetermined criteria.

Their warmth is part of the experience.

Their evaluation is a separate responsibility.

One Strong Conversation May Not Override the Entire Process

You may have had an excellent interview with the recruiter.

Then the hiring manager may have wanted deeper technical evidence.

You may have connected immediately with the hiring manager.

Then another panelist may have seen a gap in stakeholder management.

You may have performed brilliantly in the final conversation.

Then the team may have reviewed an assessment, work sample, scorecard, reference, or earlier interview that raised a concern.

Most hiring processes combine multiple forms of evidence:

• Résumé and application

• Recruiter screen

• Work samples

• Assessments

• Hiring manager interview

• Panel interviews

• Technical evaluation

• Leadership interview

• References

• Compensation alignment

• Availability

• Internal business considerations

The interview that felt strongest to you may have been only one part of that record.

This is why PathPair distinguishes an observation from a conclusion. One interviewer’s positive reaction is an observation. The final hiring decision is a conclusion reached from a broader set of information. Candidates often experience only the individual interactions, while the organization sees the combined evidence. That gap can make the final result feel irrational even when a comparison occurred behind the scenes.

You May Have Been Qualified but Not the Strongest Match

“Qualified” sounds like a final category.

In practice, it is often the beginning of the decision.

Imagine that a company interviews three candidates:

Candidate A

Has eight years of broad experience, communicates exceptionally well, and could learn the company’s systems quickly.

Candidate B

Has five years of experience but already knows the company’s exact platform, customer type, and operating environment.

Candidate C

Is an internal employee with four years of experience, established relationships, and almost no onboarding risk.

All three may be qualified.

All three interviews may go well.

The company may still choose Candidate B because the team needs immediate platform expertise—or Candidate C because the organization prioritizes internal mobility.

Candidate A did not fail.

The organization made a tradeoff.

Hiring decisions frequently turn on relative fit for a specific situation, not a universal ranking of human ability.

The Team May Have Changed What It Wanted

Sometimes the role you interviewed for is not the same role the company ultimately fills.

During the hiring process, the team may realize that it needs:

• A more senior person

• A more junior person

• A different technical specialty

• Someone with management experience

• Someone willing to work onsite

• Someone who can start immediately

• Someone with a smaller compensation requirement

• Someone who already understands the industry

• Someone who can absorb responsibilities from another position

This can happen because interviewing candidates teaches the company more about its own needs.

The job description may have been written before the team fully aligned.

Recruiter and hiring manager misalignment is a known operational problem. Greenhouse identifies unclear agreement about what success looks like, along with confusion about roles and responsibilities, as common sources of difficulty between recruiters and hiring managers.

From the candidate’s perspective, the rejection can feel like:

“I matched everything they asked for.”

That may be true.

The company may simply have changed the question after you answered it.

That is frustrating, and the organization should communicate material changes honestly. But it does not mean your interview was unsuccessful.

An Internal Candidate May Have Entered—or Always Been There

Companies interview external candidates even when internal employees are also being considered.

There can be legitimate reasons:

• The organization wants a competitive process

• Policy requires external consideration

• Leadership wants to compare the market

• The internal candidate has not yet been approved

• The hiring manager is genuinely open to multiple options

• The internal employee entered the process later

There can also be less candidate-friendly situations in which the preferred person was effectively chosen before external interviews concluded.

Candidates usually cannot determine which scenario occurred.

That is why confidently assuming “the job was already promised” is risky unless the company provides evidence.

An internal candidate may offer advantages unrelated to your interview performance:

• Existing institutional knowledge

• Established trust

• Known performance

• Lower onboarding time

• Familiarity with internal systems

• Relationships with decision-makers

• Lower perceived hiring risk

You cannot recreate years of internal familiarity during a 45-minute conversation.

That does not make the process fair or unfair by itself. It means the candidates were bringing different forms of evidence.

The Company May Have Chosen Lower Perceived Risk

Hiring managers are not only selecting potential.

They are managing uncertainty.

Every external hire involves unanswered questions:

• Can this person perform here?

• Will they adapt to our culture and systems?

• Will they remain in the role?

• Can they work with this manager?

• Will the team trust them?

• How much support will they need?

• Are their expectations aligned with reality?

A candidate with slightly less impressive experience may be selected because the hiring team believes it understands them more clearly.

For example, a candidate may have:

• Worked with a trusted employee before

• Held the same role in a nearly identical environment

• Completed a highly relevant work sample

• Given unusually specific examples

• Demonstrated direct experience with the immediate challenge

• Communicated fewer uncertainties about location, compensation, or availability

This is not always the same as choosing the “best person.”

It may be choosing the person whose success feels easiest to predict.

That distinction matters.

Hiring teams do not experience candidates as complete human beings. They experience limited evidence under uncertainty.

The better the process, the more job-related and consistent that evidence becomes.

Chemistry May Have Helped—but Evidence Decided

A flowing conversation feels powerful because humans naturally respond to rapport.

You may have laughed together.

You may have discovered a shared interest.

The interviewer may have said the time flew by.

That connection is meaningful. It can improve trust and make communication easier.

But chemistry is not necessarily evidence that you can perform the job.

A structured interview attempts to reduce overreliance on intuition by asking candidates consistent, job-related questions and evaluating responses against shared criteria. OPM notes that structure can increase agreement among interviewers by limiting individual discretion.

Research summarized by the Society for Industrial and Organizational Psychology has found structured interviews to be among the stronger predictors used in employee selection, although their effectiveness still varies by design and implementation.

This means two things can be true:

• You formed excellent rapport.

• Another candidate provided stronger job-related evidence.

A good conversation may open the door.

It does not always settle the decision.

One Answer May Have Carried More Weight Than You Realized

Not every question matters equally.

The hiring team may have identified several competencies as essential:

• Strategic thinking

• Technical judgment

• Conflict management

• Leadership

• Client communication

• Analytical ability

• Operational execution

• Adaptability

You may have performed strongly across most of the interview but provided a weaker example in the competency the team considered non-negotiable.

For example:

You gave polished answers about collaboration, organization, and communication.

Then the hiring manager asked about leading a difficult transformation.

Your example showed participation, but not ownership.

The rest of the conversation may still have felt excellent. The interviewer may still have liked you.

But the missing evidence may have mattered more than the overall tone.

This is why candidates often receive rejections that feel disconnected from the interview. The candidate remembers the complete conversation. The hiring team may be deciding around a small number of essential criteria.

That does not mean interviewers should eliminate candidates based on random preferences or irrelevant “gotcha” questions. Greenhouse has documented how unstructured processes can allow one questionable question to become an unintended litmus test, causing teams to reject otherwise strong candidates.

A defensible decision should be tied to the work—not an interviewer’s personal trivia contest.

Your Answer May Have Been Good but Hard to Score

Candidates often answer questions with real, relevant experience but fail to make their contribution visible.

Consider this answer:

“We had a large implementation that was behind schedule, so the team met regularly, reorganized the project, and ultimately delivered it.”

That may describe meaningful work.

But the interviewer still has unanswered questions:

• What did you personally own?

• What decision did you make?

• How large was the problem?

• What changed because of your actions?

• What resistance did you face?

• What was the measurable result?

• What would have happened without you?

Now compare it with:

“I owned the recovery plan for a six-week implementation that had fallen 12 days behind. I mapped the remaining dependencies, identified two approval bottlenecks, and introduced a twice-weekly decision review with the client sponsor. We recovered nine days and launched three days later than the original target instead of nearly two weeks late.”

Both may describe the same project.

The second is easier to evaluate because it makes the evidence visible.

A good interviewer should ask follow-up questions.

But candidates can help by making ownership, complexity, action, and results explicit from the beginning.

The Interviewer May Not Have Had Final Authority

Job seekers often treat “the interviewer” as the decision-maker.

Many interviewers are contributors, not owners.

A recruiter may recommend moving you forward but not choose the finalist.

A panelist may provide a score but not attend the final debrief.

A hiring manager may select a preferred person but still need executive approval.

A department leader may approve the candidate but not the budget.

A positive interviewer may have advocated for you and lost the discussion.

This is one reason statements such as “I think you’d be great here” can be sincere without predicting the outcome.

The person may be telling you what they believe.

They may not control what the organization ultimately does.

Compensation May Have Influenced the Decision

Salary conversations do not always result in an immediate rejection.

The company may continue interviewing you while it determines whether your expectations can fit the approved range.

Later, it may choose a candidate whose expectations are easier to accommodate.

That does not necessarily mean the chosen person was “cheaper” in a simplistic sense.

The company may have considered:

• Base salary

• Equity

• Bonus

• Internal pay equity

• Job level

• Available budget

• Cost of relocation

• Expected negotiation

• Future promotion implications

Candidates should not automatically lower their expectations after every rejection.

Compensation alignment is only one possible factor, and without direct feedback, you do not know whether it influenced the decision.

The useful question is not:

“Should I start asking for less?”

It is:

“Did I confirm the approved range early enough to determine whether continuing made sense?”

Timing Can Beat Talent

A candidate who can start in two weeks may be selected over someone who needs three months.

A person already completing references may be selected before another strong candidate finishes the process.

A competing offer may force the company to decide sooner than planned.

A project may create an urgent need for one skill that was previously considered optional.

Hiring decisions happen inside business timelines.

That can create outcomes that do not perfectly reflect candidate quality.

The selected candidate may have been:

• Available sooner

• Interviewed earlier

• Already approved

• Further along in references

• Facing an offer deadline

• Able to meet an urgent operational need

You can influence some timing factors.

You cannot control all of them.

The Position May Have Been Paused or Eliminated

Sometimes nobody gets the job.

A company may:

• Freeze hiring

• Lose budget

• Reorganize the department

• Cancel a project

• Move the headcount elsewhere

• Merge two positions

• Decide not to replace the previous employee

• Delay hiring until the next quarter

• Reduce the level or compensation

When this happens, candidates often assume another person was selected because the rejection message is vague.

The company should communicate honestly when the position changes materially.

But many rejection templates are designed to close the process with minimal detail. The result is that candidates blame their performance for a business decision they never saw.

Bias May Have Influenced the Outcome

Not every hiring decision is fair, structured, or job-related.

Interviewers can be influenced by:

• Similarity

• Familiarity

• Personal style

• Accent

• Educational background

• Career path

• Confidence

• Appearance

• Unstructured ideas about “culture fit”

• Stereotypes

• Affinity with another candidate

A single rejection does not prove discrimination or bias.

But it would also be inaccurate to pretend that every hiring process produces a purely objective result.

Structured interviews are intended, in part, to improve consistency by asking candidates the same job-related questions and applying common scoring standards.

When companies abandon structure and rely on intuition, charisma, or vague “fit,” capable candidates can be rejected for reasons that are difficult to explain or defend.

Candidates should not assume bias without evidence.

They also should not interpret every decision as an infallible judgment of merit.

You May Be Misreading Courtesy as a Commitment

Some interview signals are encouraging but weak predictors of an offer.

These include:

• The interview ran long

• The interviewer smiled frequently

• They said you asked excellent questions

• They described the office or benefits

• They introduced you to someone

• They said your experience was impressive

• They used language like “when you join”

• They connected with you on LinkedIn

• They responded warmly to your thank-you message

Any of these can accompany an offer.

Any of them can also accompany a rejection.

Interviewers may discuss the role in future-oriented language because that is the easiest way to explain it:

“You would work with the product team.”

This does not necessarily mean:

“We have decided that you will work with the product team.”

A stronger signal is a concrete action that advances the process:

• Scheduling the next interview

• Requesting references

• Confirming compensation

• Discussing a start date

• Sending a work authorization request

• Beginning a formal background-check process

• Delivering a written offer

Even strong signals are not guarantees until an offer is final.

What a Rejection Actually Proves

A rejection proves one narrow fact:

The organization did not select you for that position through that process at that time.

It does not automatically prove:

• You interviewed badly

• You were unqualified

• The interviewer disliked you

• You cannot succeed in the role

• Your experience has no value

• You will never work at that company

• The selected candidate is universally better

• You should reinvent your entire career

Candidates often turn one hiring result into a broad identity judgment.

The evidence does not support that conclusion.

The rejection concerns a specific decision under specific conditions.

Treat it at that scale.

How to Evaluate Whether the Interview Really Went Well

Instead of measuring the interview by friendliness, evaluate the evidence you provided.

Ask yourself:

Did I understand the problem behind the role?

Could you explain why the company was hiring and what the person needed to accomplish?

Did I connect my experience to that problem?

Did your examples address the team’s actual needs, or did you mostly describe your general background?

Did I make my contribution clear?

Could the interviewer distinguish what you did from what your team did?

Did I provide evidence?

Did you include scale, complexity, outcomes, or measurable results?

Did I answer the question asked?

Or did you give a good story that only partially addressed it?

Did I show judgment?

Did your answers explain not only what you did, but why you made those choices?

Did I ask useful questions?

Did your questions help you understand expectations, challenges, decision-making, and success?

Did I leave important concerns unresolved?

Did the interviewer repeatedly question your level, availability, compensation, location, industry experience, or technical depth?

This reflection is more useful than asking only:

“Did they seem to like me?”

Being liked is pleasant.

Being understood against the role’s requirements is more important.

What to Do After a Good Interview Ends in Rejection

1. Let the Result Be Disappointing

You do not need to pretend the rejection does not matter.

A strong interview often creates stronger hope. Losing the opportunity can therefore hurt more than a rejection after an obviously poor conversation.

Acknowledge that.

Then separate disappointment from self-condemnation.

You lost an opportunity.

You did not receive a final verdict on your ability.

2. Ask for Feedback Once

Send a concise and gracious request.

Example:

Subject: Thank You and Feedback Request

Hi [Name],

Thank you for letting me know. Although I’m disappointed, I appreciated the opportunity to meet the team and learn more about the role.

If you’re able to share any feedback about the experience or qualifications that influenced the decision, I would be grateful. I understand if company policy limits what you can provide.

Thank you again for your time and consideration.

Best,
[Your Name]

Some organizations prohibit detailed feedback. Others may provide only general information. LinkedIn notes that company policies sometimes restrict recruiters and hiring managers from offering specific candidate feedback, even when the individuals would otherwise be willing to do so.

Ask once.

Do not argue with the answer.

3. Review the Role, Not Just the Conversation

Return to the job description and your interview notes.

Identify:

• The three most important requirements

• The strongest evidence you gave for each

• Any requirement you discussed only briefly

• Any concern the interviewer revisited

• Any example that lacked specificity

• Any question that surprised you

This helps you identify genuine improvement opportunities without inventing flaws.

4. Preserve What Worked

Do not rebuild your entire interview approach simply because one company said no.

Write down:

• Answers that felt clear

• Stories that created engagement

• Questions that produced useful information

• Moments when the interviewer responded strongly

• Examples you want to reuse

• Areas where you communicated naturally

A rejection can contain successful components.

Keep them.

5. Improve One or Two Things

Avoid producing a list of 17 supposed failures.

Choose the most evidence-based improvement.

For example:

• Make individual ownership clearer

• Add measurable results

• Prepare a stronger conflict example

• Research the team’s business problem more deeply

• Explain a career transition more directly

• Confirm compensation earlier

• Shorten overly detailed responses

Specific improvement builds skill.

Global self-criticism only builds fear.

6. Keep the Relationship Intact

A thoughtful rejection response can preserve future opportunity.

You might say:

“I appreciated meeting the team and remain interested in the company. Please keep me in mind for future roles that may align with my background.”

Do this only when you genuinely mean it.

Strong candidates are sometimes reconsidered for:

• A similar opening

• A more senior or junior role

• Another team

• A future hiring cycle

• A position that better matches their specialty

A well-handled rejection does not have to erase the relationship.

What Recruiters and Hiring Teams Should Do Better

Candidates do not expect every positive interview to result in an offer.

They do expect the process to make sense.

Recruiting teams can improve rejection experiences by explaining the decision at an appropriate level.

For example:

“The team responded positively to your communication and project leadership experience. We ultimately selected someone with deeper experience in our specific regulatory environment, which is an immediate need for this position.”

That explanation does not reveal private information about another candidate.

It does not create a legal debate.

It gives the candidate enough context to understand that their interview may genuinely have gone well.

LinkedIn’s candidate-experience guidance recommends providing specific feedback where company policy allows and communicating rejection with clarity and compassion.

Teams should also avoid offering praise that they cannot contextualize.

Telling someone:

“You were perfect.”

Then sending a generic rejection creates confusion.

A more responsible message is:

“Your interview was strong, particularly your examples of stakeholder management. The final decision came down to another candidate’s direct experience with the platform this team is implementing.”

That is honest.

It recognizes the candidate’s performance without pretending selection was inevitable.

Hiring Teams Need Better Decision Structure

A candidate should not lose a role because one interviewer “just didn’t feel it.”

Organizations should define:

• What the role requires

• Which competencies matter

• What evidence interviewers should collect

• Who evaluates each competency

• How responses are scored

• Which requirements are essential

• How disagreement is resolved

• Who owns the final decision

• How the decision will be communicated

OPM’s structured-interview guidance emphasizes standardized questions, common evaluation criteria, and job-related competencies.

Structure does not remove human judgment.

It gives human judgment something more reliable to stand on.

The Candidate Experience Does Not End With “No”

PathPair defines Candidate Closure as providing a definitive outcome and appropriate communication at the conclusion of a candidate’s hiring journey.

That matters because rejection is not separate from candidate experience.

It is part of it.

PathPair’s founding philosophy recognizes that not every candidate will receive an offer, but every candidate should leave knowing they were treated with honesty, respect, and care.

A candidate who receives a thoughtful rejection may still:

• Reapply

• Refer someone

• Recommend the company

• Become a customer

• Accept a future conversation

• Speak positively about the team

A candidate who receives confusing praise followed by silence may remember only the contradiction.

The organization cannot remove disappointment.

It can prevent unnecessary confusion.

The Perspective Shift Most Candidates Need

You may be asking:

“If I did well, why wasn’t I hired?”

A more accurate question is:

“What else, beyond whether I interviewed well, could have influenced the decision?”

That change matters because it separates performance from outcome.

Your performance belongs partly to you.

The final outcome belongs to an entire system involving:

• Other candidates

• Multiple interviewers

• Business priorities

• Role design

• Timing

• Budget

• risk

• internal politics

• available evidence

• human judgment

You can learn from the outcome without claiming responsibility for every variable inside it.

That is the part many candidates never hear:

You can do enough to deserve serious consideration and still not be the person selected.

It hurts.

But it is not a contradiction.

Final Thought

A good interview is still a good interview—even when it does not end in an offer.

The conversation may have been genuine.

The praise may have been sincere.

Your performance may have been strong.

The company may simply have made a different decision using information, constraints, and comparisons you could not see.

Reflect honestly.

Improve what the evidence supports.

Then resist the temptation to rewrite a good performance into a failure simply because the ending disappointed you.

You were participating in a hiring decision.

You were not receiving a final judgment on your potential.

Key Takeaways

• A positive interview and a job offer are related, but they are not the same outcome.

• More than one candidate can perform well; selection is often comparative rather than pass-or-fail.

• Interviewer warmth, praise, and engagement may be genuine without guaranteeing an offer.

• One interviewer may support you without controlling the final decision.

• The company may prioritize a specific skill, internal candidate, timing advantage, compensation range, or lower perceived risk.

• A role may change, pause, or disappear after interviews begin.

• Chemistry helps create connection, but structured hiring should prioritize job-related evidence.

• Evaluate your performance by the evidence you provided—not only by whether the interviewer seemed to like you.

• Preserve what worked and improve only the areas supported by actual evidence.

• A rejection proves that you were not selected for one role at one time. It does not establish your overall worth or capability.

FAQ

Can an interview genuinely go well if I was rejected?

Yes. You may have communicated effectively, built rapport, and demonstrated that you could perform the work. Another candidate may still have matched a specific need more closely, or internal circumstances may have changed.

Why did the interviewer praise me?

The praise may have been sincere. Interviewers can recognize your strengths without having sole authority over the final decision or without believing you are the strongest match in every required area.

Does rejection mean another candidate interviewed better?

Not necessarily. Another candidate may have had more direct experience, internal relationships, earlier availability, lower perceived risk, or stronger evidence in one essential competency.

Are “signs an interview went well” reliable?

They can indicate that the interaction went well, but most are weak predictors of the final result. Concrete process actions—such as scheduling another interview or discussing formal offer details—are more meaningful than smiles, praise, or future-oriented language.

Why would a company hire someone with less experience?

The company may prioritize direct relevance, adaptability, compensation alignment, availability, internal familiarity, or a particular skill over total years of experience.

Could the company have already chosen an internal candidate?

Yes, although you usually cannot know whether the internal candidate was always preferred or emerged during a legitimate competitive process. Avoid treating that explanation as fact without evidence.

Should I ask why I was rejected?

Yes. Ask once, politely. The company may be unable or unwilling to provide detailed feedback, but a concise request is reasonable.

What if the feedback is vague?

Look for repeated themes across several interviews rather than overreacting to one vague response. You can also review whether your examples clearly showed ownership, judgment, relevance, and outcomes.

Should I change all my interview answers?

No. Preserve the parts that worked. Improve one or two areas supported by evidence rather than assuming the entire interview was poor.

Can the company contact me for another role later?

Yes. Strong candidates are sometimes considered for future openings or different teams. Responding professionally can preserve that possibility, although you should continue your job search rather than wait for it.

Was the interviewer lying when they said I was a strong candidate?

Not necessarily. “Strong candidate” may mean you met the standard and remained competitive. It does not mean the decision was complete or that no other candidate was stronger in a critical area.

Could bias have affected the decision?

It is possible. Unstructured interviews can allow subjective preferences to influence decisions. However, one rejection alone usually does not provide enough evidence to determine whether bias occurred.