There was an interview with each of the potential rotations which was beneficial to understand each of the roles. HR could have provided a more detailed description of what each of the roles were before, so that you could have come in more prepared. Having 8 potential rotations in very different business segments made the interview more general and a learning experience for the interviewer. Given it was a rotational program, they were mostly interested in your eagerness to learn and if your background would be a good fit for their group.