I spoke with a representative from the team at an Apple Career Fair, and from there got an invitation to the next step 1-1 phone call interview. The phone call interview was scheduled for 30 mins and did not move onto next stage from there.

Technical but the people were nice, they were looking for people with a different background than I had so it was clear I wouldn't get the job but it was an informative interview process and it's clear a lot of cool stuff is being done there.