FDD Interview Prep and Alvarez and Marsal Question

I recently interviewed with Alvarez & Marsal for a role in their TAG group. I’ve met with an MD already, but so far the interviews haven’t included any deep technical questions. Their website mentions that the final round is in-person (sounds like a superday), so I wanted to see if anyone here has gone through the final round for TAG or FDD and can share what to expect.

For those who’ve done FDD/TAG interviews at A&M or similar firms, what were your superday interviews like? And what resources did you use to prep for the technical/accounting/diligence-style questions or case studies?

Any insight would be greatly appreciated. Thanks in advance.