Apple Software Engineer interview questions

Got an interview after speaking to a representative at a 2-day long networking event. Scheduled an interview for the next day. The interview consisted of both a technical and behavioral portion. The behavioral was very relaxed and not intense at all, just basically a chat with the interviewer about the department and basically you just act like it's your dream to work there. Technical was just some whiteboarding

1 phone interview, invited for the 1st round on-site interview. met 6 persons in a row for about 5 hours. but haven't met hiring manager and wasn't informed his name either before. I guess I impress them not that great but got positive response from most of them. a couple of coding questions were asked from almost every person. I have answered right for most of them, I realized one mistake approach for the last one after got home. Even though I'm a very strong programming guy for over 20+ years and top ranked in the team always, I understand a slight mistake might have influenced the situation in the inteview. but I think this on-site interview process is rude and not respectful for the candidate. since I haven't see my hiring manager and chat at least for short time.