Done with my interview and as promised I am going to break the trend and share my experience
The process was exactly same as Sandy said it would be.
Type of Interview? hub interview with adcom.
Type of questions? Only 3 behavioral questions - teamwork, disagreement, leadership and then detailed questions based on my answers.
Stressful or serious? Not at all, my interviewer was very polite and friendly
Kept writing all the time? Yes and told me in the beginning itself and he would do so
Could I have done better? Yes. I was prepared with some broad stories but had to answer the detailed questions on the spot and could have done better on that front.
I hope this was helpful and all the best to those yet to interview.
Thanks you for your details! I hope you will get in - it was nice of you to share the experience!