It's OK; the interviewers are nice. The questions are very hard, so definitely practice DS and Algo stuff. There really isn't much else to discuss beyond being prepared, as they do expect a lot from you.
Data structure and algorithm questions
The following metrics were computed from 3 interview experiences for the Apple SWE Intern role in Canada.
Apple's interview process for their SWE Intern roles in Canada is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for Apple's SWE Intern interview process in Canada.