NVIDIA Sr Software Engineer interview questions

I had a panel interview with 5 engineers and the middle one was a lunch interview. The interviewers asked questions related to robotics and computer vision. One of the interviewers asked about a class that I took 10 years prior :)

Applied online. Got response after 1 1/2 months for setting up interview. One technical phone interview. Moderate question, wrote code, it was efficient and working (I even tested it). Evaluation seemed unfair because after answering all questions right and writing working code, I would expect to go to the next round.