NVIDIA interview questions

Applied on their website, did 7 rounds of interviews. The whole process is pretty bad where one interview was cancelled and rearranged on the day of the interview. Coordinator isn't responsive. I was told during the interview that problem solving is the thing they look for but it turns out the specific experience is what matters. Even though it was clear in the second interview that certain fields isn't my speciality but they still arranged interviews to test me. I was told there will be a behavioural but there isn't. No standard process and free style interviews really. I would say it's better than doing leetcode (which is a complete waste of time). But i think they could have saved both sides' time on certain interviews.