It was short, about 20 minutes as I already contacted the prof., But I ruined the interview. I got nervous; it was my second PI I ever made and the internet sucks (remote location -_-). It was on Skype with one professor, and I think another guy was a research scholar. I don't know why that research scholar was laughing, maybe my communication language got ripped due to nervousness, but I answered almost all questions. right now waiting for the result, although chances are 50-50 as my technical skills are good and answered all question but communication skill was not up to the mark