I was a college campus hire. Went through 2 rounds of interview, first was a 30min behavioral and 30min case and was notified the same day if we passed that round. Second round was the next day and it was 1 hour case. Job offer was extended a couple of weeks after. None of the interviews was on-site. We did however have a EYO day which is sometime in November (at least for the office that I am hired for).

I went through two interviews. The first interview included the behavioral part and case part. The second interview was with a managing director, and the entire interview was about solving a M&A case.