Tesla Senior Software Engineer interview questions

I applied online, and a recruiter reached out to me. We had a regular recruiter screening interview. Moved to online phone screen. They will start with intros on both ends and ask about a project in detail. I explained my project in detail, but the interviewer didn't feel it was very challenging. Well, can't do much about it. Then went for a system design question. I explained till deep dive, and then the time was over. The last 5 minutes were spent asking any questions I had. I feel 20 min is way too little to design and discuss system design. But that's how their process is. I felt the interviewer was condescending.