ProSapient Associate Director interview questions

A recruiter reached out to me and encouraged me to send over my CV and have an initial conversation with HR. I was under the impression that it was an introductory call to learn more about the role and see if it might be a good fit, but the interviewer dove into full-on competency based questions. I was completely unprepared and taken off-guard. After the interview, I was told I would interview with a C-level executive and was told to prepare thoroughly as it was a competency based interview. I prepared for several days and then on the day of the interview, it was a very general conversation. Didn't feel anything at all like an interview. I was told they would let me know within a week and I didn't hear back for more than 2 weeks. It was all very bizarre and off-putting and even if they had extended me an offer, I don't know if I would have accepted.