Behavioral interview with upper management came in the second round after a phone screen. I was interrupted throughout that time asking for too many clarifications to the point where the person was just not interested in my actual responses. I asked a question towards the end, but declined to as I was "supposed to ask HR." Very unprofessional in my opinion. Multiple case interviews as well!

Smooth and transparent. Technical and manager rounds are mostly constitutes around how you go about a problem/situation, thinking process and execution. Overall, the entire process depends on how you go about it, just need to be confident and cognitively strong with good thinking and problem solving skills