Sharpsell interview questions

Interviewer came, barely introduced himself. Asked me to introduce myself. Then jumped to some fundamental question like difference between authentication & authorisation which I explained clearly. Then he shared a doc with 2 DSA questions. Interviewer explicitly asked me to solve 2nd one. Again it was a classic leetcode DSA problem. I explained my approach and time complexity and wrote the optimal solution. All test cases passed. I was expecting interviewer to ask followup questions. But no, he ended the interview abruptly. The entire interview was scheduled for 1hr and it wrapped up within 20mins. After 4days got the mail that “after careful consideration they are not moving forward”. I really don’t know whether they are actually interviewing or showing off.