NetApp Datascience intern interview questions

First-round was screening which had 50 questions in 60 minutes. It was a pretty easy one for a candidate good in aptitude, logical reasoning, and comprehension. After a week I got a call from HR saying that I had cleared it and scheduled 2 rounds of technical interviews - one from India and other from the USA. Both the interviews were 1 hour each and It took 2 days for the interview process. After a week, I was informed that I had cleared it and proceeded with the managerial round with 2 panelists from the USA. The managerial round was almost 2 hours long and they gave positive feedback and informally told me that I was recruited. After a few Followup calls for a week, the HR team informed me that I was not selected as the hiring for the role was not approved. Wasted my 4 weeks of time just to listen to this. The Indian HR team is too slow and don't respond properly.