Two rounds of interviews after initial screening process. First round consisted of 3 case interviews and lasted ~3 hours. Second round (later in the week) consisted of a full day of interviews - both behavioral and case studies. One of the case studies was a mock client presentation: you had 45 minutes to review a deck of ~50 graphs and data slides, and synthesize the data into the most important insights to address the client's issue. You then presented your analysis to the interviewer later in the day. The interviewer asked probing questions to challenge your insights, but was not unreasonable. I think they're testing how you handle pressure so the most important thing is to maintain your composure and have a good conversation with your interviewer.

Applied online and did an online test. Received an invite to first round interview about a week after. I had 2 30-minute interviews, with 10 minutes of CV stuff in the first interview followed by a short business case and a full 30-minute business case in the second interview.