Mercer Actuarial Analyst interview questions

Applied online and received a call from someone in HR a few weeks later. She asked me questions that were not specific to the position I had applied for, such as whether or not there were many actuarial jobs available at the moment. (She let me know that she was just trying to determine whether or not I had good communication skills.) At the end of this (for lack of a better description) phone interview, she let me know that I would be contacted to set up an in-person interview one day next week. As the days passed, however, no one got in touch with me. After leaving a few unreturned phone messages with my original HR contact, I finally got in touch with her only to hear they still hadn't set up an interview schedule. Eventually, I was emailed with an interview date 3 weeks after the initial phone call. I had 4 1:1 interviews with a lunch with two analysts in between. I was expecting a very rigorous interview process with analytical tests and tough questions, but everyone mostly asked me to just walk me through my resume. Everyone was very friendly and made me feel comfortable. It seemed like everyone got along well in the office. All in all, my actual interview experience was very pleasant, but my experience with their HR really turned me off to the company. An entire month after my interview, I finally received a rejection email--nothing remotely personal that acknowledged the time I put into the interview process, just a basic form rejection "we had a lot of applicants, thanks for considering us, do not reply". I wasn't thrilled.