4 back-to-back interviews with separate managers over the course of 4 hours. Was fairly laid back but one could tell each one had it's own purpose and approach meant to gauge a candidate's ability to adapt to different personalities like one might experience dealing with different types of clients.
Questioned mostly pertained to "what would you do in this scenario" and "tell me about a previous experience where you had to..." but the interview as a whole was a personality test. They wanted to know how you could carry a conversation and talk with clients. The role requires an extreme attention to detail and meticulous record keeping so the conversation was steered toward topics where one's aptitude for such traits might be showcased.