The email notification for interview appointment by the consulate is not the entire interview. It's in 2 parts now. Part 1: That day scheduled will be just to turn in original documents. The consulate gives you a blue piece of paper for your next scheduled interview appointment. Part 2: The following is when they ask you the questions about your relationship and case.
Consulate / USCIS Member Review #29872
Review on July 16, 2021:
