Apple Hardware Systems Engineer interview questions

A recruiter call first and then a 45-min HM call from the iPhone team. The HM was very disrespectful to me and kept disrupting me while I was explaining my experience. He kept saying, “explain what you did, not the product itself”. However, how can someone explain some dedicated hardware related work without explaining the background? It’s like explaining how pistons work in engines without explaining what is an engine. And the call only lasted 30 minutes with him interrupted me once again and asked me “Why Apple?” out of nowhere. Very bad experience overall. I was very patient and explaining everything logically throughout the whole process but clearly the HM wasn’t. I got rejected the second day.