Very straight-forward; asked a couple pointers on the resume itself then to basic audit technicals like assertions and substantive testing. Definitely casual and don't need to expect any case studies or etc.

The interview was done through a 15-20 minute phone call where I was asked questions about my CV, that is my current education and the university I am studying in, as well as being asked to elaborate on my work and non-academic experiences. I was also asked the department I am most interested to work in and a follow-up question based on that.