https://scifi.stackexchange.com/questions/96150/a-few-questions-on-sirius-black just came up on the Close Vote queue. Because it's asking several questions in one go, I VTCd as too broad.
Since this is a new user, by their own admission unclear regarding our rules on multiple questions, and since I know that we've allowed multiple-questions in other cases1, I thought I'd leave a comment explaining when it's okay and when it's not. Then I realized I didn't actually know; I have an instinctual idea, but no expressible criteria.
So my question: when is it okay to have a question with multiple sub-questions, and when is it considered "Too Broad"?
1 Although I'm struggling to find examples at the moment; I know I've come across questions with some variation of "And another thing" in them, and these questions not being closed