A 1.5-day campus visit, where each candidate gets paired with three faculties of interest, and have 30-minute 1-on-1 conversations with them. Among the three faculties, one of them will be an "interviewer" and the conversation is treated like an interview. They basically ask something about the classes you have taken, and then ask you to give a short talk/presentation.

Causal conversation with a bunch of professors in my department. No technical questions are asked -- the "technical" part is assessed during the CV-reading phase of recruitation. The professors want to see whether you "fit in" with the spirit of the school. That means that you need to be smart, confident about your skills, and most of all passionate about science. Broad knowledge about random scientific topics was definitely a plus. If you can hold a conversation about science with a specialist for half an hour, you'll be fine.