It can be. Final-round interviews are sometimes less scripted and more conversational than earlier rounds.

Senior interviewers may use the case to test judgment, communication, and how you handle ambiguity rather than following a standard sequence.

A partner might move from pricing to implementation to your personal experience without clearly announcing each transition.

Practice core case skills, but also practice staying composed when the conversation moves unpredictably. If useful, this guide on final-round consulting interviews gives more detail.

Partner rounds can get weird and conversational.