Qualcomm interview questions

One of the worst interview experiences ever in my life. HR called to setup interview and we agreed on dates. Hiring manager shows up to online interview. Doesn't really greet me, Gets on phone call within a minute of the call. Couldn't communicate exactly what he wanted to test me on, when I tried to ask. Was very condescending throughout the interview when I tried getting help by explaining my thoughts. He treated me like I'm some peasant who is incapable of imagining how hardware works, that was the level of condescension. Goes afk to get the door. Interview was only setup for an hour by them. Blames that because of me only one topic could be tested. Asks two questions in CA and tells that my skills aren't what was expected for my level. Two questions in CA in a span of 5 mins. Decides on call to reject me, like he's doing me some favour in letting me know, cuts call. Honestly ruined my day probably my entire coming week. He was under prepared to conduct this interview is what I feel and as much as I hate myself now because of the way he made me feel during the call with his words, I'm also glad I don't have to work for this guy