What happened?

Nothing happened. It was an informal technical interview with the program manager at JAX. 1 hour call and the interview was remote but describing him as opinionated and entitled is an understatement. Best of luck to them.

Asking because I am on that team :)

I went through the same hiring process and had a positive experience at every stage. I had a strong competing offer but went with the JAX team at NVIDIA.

I'll pass it along as feedback.

Would you mind sharing some details? It sounds like an interesting peek behind the curtain.