Hello Andrea, thanks for giving the opportunity to help you!
The typical McKinsey interview timeline is this: 60 minutes, of which ca. 15 for the introduction and personal fit, 40 for the case and 5 for the questions from you to the interviewer.
That said, as an interviewer at McKinsey I have sometimes bent the timings, in particular:
- Extended the interview by 5-10 minutes if I or the candidate weren't constrained afterwards to answer more of the candidates' questions
- Spent more on the personal fit and/or the case to fully assess the candidate on all the expected dimensions
Good luck in your preparation! Don't hesitate to reach out to find out more about the secrets of McKinsey interviews.