First-round interview was a video screen with 8 or 9 behavioral questions. It was not difficult. For the second round interview, I flew to Chicago. The interview was 2 hours long, 4 separate 30-minute interviews. All behavioral. Interviewers were nice. Office was very nice and had a great view of Chicago. After the interviews, the intern candidates got lunch with some employees. Mercer is terrible at getting back to you in a timely fashion. I interviewed in Chicago on October 20 and heard back on January 3 that I had not been offered the position. I reached out to them several times during that time period and they just told me to keep waiting.