Very long, very unprofessional, and a bit humiliating. I felt patronized. The people were not able to provide explanations during the technical interview, although they claimed that they were the authors of the task. While I was solving the task, they interrupted me constantly with annoying remarks and forgot to mute their mics. I had to hear their whining children and spouses talking or their phones ringing, instead of them muting themselves for the time of this part of the interview.

One technical task. The company uses HackerRank in the interview process. Very similar tasks (or even the same) are present in services like HackerRank, Codility, LeetCode, etc.