A phone interview. About 30 minutes and 3 questions. Typical behavioral questions. Not very hard of you prepare well. The interviewer was really nice and explained a lot about the position.

Case study with a current PA. The case study starts out simple but progresses in complexity as more edge cases are thrown in to test your mental framework. I managed to arrive at the correct answer for each question(there is a correct answer for every question despite HR telling you cases are open-ended). You are not allowed to make mistakes in your thinking or say something that is wrong even if you correct your thinking later and achieve consensus with the interviewer. Therefore make your first answer count.