Two interviews, first round on campus, second round in the San Francisco office. Heard back two days after the first round and the same day of the second round with my offer First round was fairly straightforward with two cases with two different people and standard fit questions. Second round was much more difficult with a presentation case where we were given about 50 slides and 45 minutes to make a presentation and then present it to a partner. Felt like I went the complete wrong direction with the answer, but modified my suggestion during the conversation

Multiple rounds with consulting case interview portions and fit portions. Each round of interviews had multiple interviews, and the interviewer gets more senior as you progress through the interview process