Apple Mechanical Design Engineer interview questions

It was very technical. The interview process tended to be friendly; however, i could tell I was one of the last interviews of the day and the interviewer was probably trying to get it over with. He did share some cool history about apple with me though.

Many rounds interview , HR is nice but Hiring Manager seem screwing person type, trying to not understand the answer. After 4th interview, everyone is ghosting, no feedback about the result. Bad impression.