I tried this in my last round of interviews. It is very difficult to get any meaningful information from this process, because, just like candidates, interviewe

I tried this in my last round of interviews. It is very difficult to get any meaningful information from this process, because, just like candidates, interviewers are incentivized to not tell the full truth. Except in the worst cases when the interviewer just dgaf, they can’t really share negative information for fear of reprisal. (And it doesn’t benefit them either.) Your best bet is to ask a question that allows them to answer honestly, without sounding like they are answering negatively. The problem is it’s hard to come up with such questions.