Yeah I noticed this. One interviewer had a very interesting tactic. He had a topic ready that is totally outside of the role you are applying for. He would not bring up the topic immediately, but soon as he decided ‘no’, he sets you up for failure by asking all these questions about the topic.

Then they send out a rejection letter saying you don’t know enough about the topic. What can you do? Reply back ‘But you know that topic has nothing to do with the position’. It was the first time I saw a interview version of a ‘kill switch’.

As an interviewee, you also develop radar for this where you also can just check out 10 minutes into the interview and not care too much (so much is decided on initial perception, looks, vibes, speech - within minutes).