I am an experienced hire interviewing for a Transformation Analyst role at McKinsey RTS. So far, I have gone through a recruiter phone screen, a technical phone assessment, and two 60 minute case study interviews. I have just heard back that I am being invited to a final round interview, however rather than a final round like I would expect, I am being told that this will be a 30 minute phone call with a partner to discuss my motivations and any remaining questions I have.
Has anyone been through a final round McKinsey interview like this and have any advice for how to best prepare?