Congratulations on the interview call ! This is a very useful topic and could be an extremely important thread. I am an international applicant and this is my first cycle (applied to 6 schools). I have not heard back from any of the Universities yet, which is understandable. But I would love to know more about the kinds of questions that shortlisted applicants can expect during interviews.
In your case @masthanaif I may, how long did the interview go on for? In your experience, how do you think POIs respond to the transition from earlier work to the proposed project? You mentioned the continuities between the two that was brought up for discussion during your interview but in my case, there is a complete empirical shift which I have tried to justify in my own way in the SoP.