I was referred by a professional contact. They connected me with the department director. I met him for coffee. Following this I got an interview. Part 1: I was emailed a "case study" I had 24 hours to complete. There was a written portion (something like a letter to management about an HR issue) Part 2: Create a slide deck and go in person to present it Part 3: During in person presentation, I responded to behavioural questions.

first round with consultant and senior consultant, multiple mini cases and behavioural questions very quick to move to second round second round with senior manager, case presentation etc slow response time after second round