Microsoft Software Developer - Internship interview questions

Skipped to final round. Two back to back interviews: first a leetcode medium (on the easier side) and then a system design question. I don't think the interviewer understood the question because he kept on confusing himself, gave me an API where 2 endpoints are the same but had different names, and asked a question which was exactly what one of the endpoints returned. Then he screamed at me that I can't just call the endpoint before realizing that I was right and then changed the question.