Apple Sr. Software Engineer interview questions

Apple have a job fare for collect the resume and background checking for next in house interview. It did not last for a long time, just about 15 minutes for overall. general question about what you did in daily working, and several technical questions.

I was contacted by the recruiter.I had two telephonic interviews and then a day long onsite interview. All of it went very well. The HR provided positive feedback after the interview, but later changed to negative and there was no offer