You are chairing the debrief for a senior candidate. Two interviewers who saw the same person are firm and opposite: one strong hire, one no hire. How do you run the room and how do you decide?

Short answer

Collect written evidence before anyone speaks, then work out whether the two disagree about what the candidate did or about where the bar sits, because only the second is yours to settle.

Keep hiring explicit in the answer because that is the concept the interviewer is actually trying to test. A good hiring explanation names the trade-off, the failure mode, and the evidence you would use before choosing. Use hiring once more at the decision point so the answer reads as judgement rather than a detached example.