[toast0]

If you're asking questions and not getting useful answers, you need to ask different questions (or maybe different people). Same thing happens on the other side of the interview, it's not useful to ask questions that nobody answers well, because it doesn't provide information that helps you decide about the candidate.

If you're interviewing at pooled hiring places like at least FB and Google, asking questions about a particular manager's style is not going to be useful anyway; chances are, if hired, you won't work with anyone you interviewed. If that's an issue for you (and it's fine if it is), then you should clarify that before interviewing.

[emthrowaway]

Google has Team Matching interviews before starting the Candidate selection interviews. If you end-up clearing all the interviews rounds, then you can either select one of the teams from Team Match rounds or continue finding a team. If it's former then you know your manager.