There was one technical round of interview over a video conference and another casual telephonic discussion with HR upon confirmation.
The Technical interview lasted for 60-70 Minutes and the focus was mostly on theoretical aspects as well as the practical experiences and projects from the current job. I was being interviewed for the Computational Fluid Dynamics domain, and thus the theoretical focus was on Heat Transfer and Fluid Dynamics. The questions were mostly to check fundamentals and some applied concepts. The interview panel was very knowledgeable and were focusing on minute details.
The HR discussion was a casual chat. I was asked why I'm considering a change in job, about my family background, and remuneration expectations. The HR executive was extremely friendly. This discussion was a part of the confirmation of the offer,