Asked me about using a single token in multi-tenant environment and I told him why that was a bad idea and interviewer insisted it could be done even though I explained Google, Amazon and others don't do this and will still create a separate token. Then wanted to argue and blame me. I had to stop conversation and say when I am interviewing I try to look for ways to find things in common and explain question and not blame interviewee for not understanding question. This calmed him down and he went to another question which seemed again like he was trying to get tech advise.