Applied early in the school year for a summer associate position and was notified a few months later that I was selected for a first round interview. From notification of interview to second round interviews were 2 weeks. I applied in September. It was 1 hour, split between two consultants. Each asked some behavioural questions, and conducted a case. As is rumour, both cases had visual components. One was driven by interviewer without time or option to structure it myself.

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