Gusto Sr. Analytics Engineer interview questions

Applied online. Got email from the recruiter that I'm selected for the next round which was HM. It went pretty well and the HM did most of the talking. I got a very good vibe from the interviewer. Only asked basic sql python questions. Next round was where the interviewer seemed extremely disinterested and was having a hard time to answer my questions, These questions were a bit tricky and it took me long time to understand the question and interpret the data.