Apple Machine Learning Engineer interview questions

Appied through the company's carrier website. After 1 month I have been contacted for an interview. The interview process took about 2 months in 3 separate sessions: 1 homework, 1 phone interview and one full day on site interview. I haven't rushed through it so it could have been slightly faster if I wanted. Received an offer after less than a week.

Applied online to the job posting. Hiring manager then reached out to me through a recruiter. After talking to the recruiter, a phone screen was scheduled. The interviewer immediately started testing me upon picking up the phone. Had an over the phone interview where they tested my coding skills over coderpad. A number of questions were asked. They said I could use any language I wanted, but it became clear during the call that they wanted me to use Python or Java.