PwC Auditing interview questions

there was a group work at the start with other 5/6 where you had to make a ppt, then behavioural interview after. The group work lasted around 3 hours while the behavioural was very short.

I barely talked in my interviews with any of the big 4 and got offers from all. Prepare for the basic interview questions, but come up with great questions of your own. IMO that is the most important part of an interview. If you can get the person to talk extensively about their job/themselves, they will look favorably on the interview.