Samsara Software Engineer Internship interview questions

The interviewer lacked basic CS knowledge. Specifically, I had a function that just removed a singular item from a python set (hashset) and said it ran in constant time. On the other hand, the interviewer was aggressively condescending about how set removal is linear, falsely believing it requires iteration through all the items. Amortized constant time operations for hashtables/sets is one of the most basic and core concepts presented in any intro CS sequence -- a quick google search easily reveals thousands of articles explaining it. The fact that he criticized me for his own lack of fundamentals knowledge is absurd. Other aspects of the interview were similar to those who also had negative experiences. Multiple signs indicated the interviewer was very disengaged. For example, at one point we moved onto another question and in the middle of my solution explanation, he jumped back to a piece of code I had written 5 minutes earlier. Furthermore, at multiple points I could hear the shuffling of papers/I don't know what over the phone and he sounded very bored. On a positive note, recruiters were quick to schedule rounds.

I messaged a reciter on Linkedin. They ghosted me when I asked for feedback when I was rejected after my coding phone screen. I thought I did fine, solved the question and had extra time to ask questions. The interviewer said my solution was good, my code ran, I even wrote test that passed all cases. I asked if I should write more but the interviewer said it was good. I even considered writing more code for edge cases and the interviewer said I didn't need to do that much but still got rejected. But I expected this, I heard it is very common for Samsara to do this.