I had two 45-minute interviews, back-to-back. The first interviewer spent most of the time on the case, and it was really bizarre. It was unlike anything I had practiced, and I knew I messed up on a simple math calculation. The second interview had a VERY straight-forward case which I think I did pretty well on. Both asked me a few questions about my resume before starting the case, and then I was given a few minutes at the end to ask them questions.

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