That’s weird, but like you say, it seemed like a sort of nervous habit. Not during interviews, but sometimes I close my eyes when I want to focus intently on w

That’s weird, but like you say, it seemed like a sort of nervous habit. Not during interviews, but sometimes I close my eyes when I want to focus intently on what the speaker is saying. I used to twirl my pencil. I try and give both interviewers and interviewees the benefit of the doubt. Walking out without saying anything seems pretty rude, but I don’t know all the circumstances. Laughing in your face seems much worse. It’s a two way interview. If it doesn’t feel right, hopefully you’ve got other options and don’t need to proceed. Or get an offer (if it isn’t going to take 5 more rounds of interviewing, you’ve already committed time to the interview, consider whether it’s worth taking it to completion) and then raise concerns and listen to how your concerns are addressed.