Cornerstone Research Summer Analyst interview questions

First round interview on campus. 2 half hour interviews, heavy focus on case. Final round interview in office. Over 4 hours, 5 interviews with different levels of management, followed by an hour of lunch with 2 analysts. Most interviews come with a case, although the final one with the head of the LA office was very conversational and relaxed. Case interviews are structured and guided, with a lot of questions asking for your input along the way. All in all, it was a very enjoyable experience, just didn't manage to impress as much as the other candidates who also interviewed.