I was invited to the an interview and was asked something about how I would guess the "meaning" of communication in some network. Let's say A, B, C were the instructions. The query was given with zero context, and whatever I suggested didn't get any response from my interviewer. All the questions I raised about the data and context were just flat out ignored. It didn't create a discussion, did have followup questions, nothing. It was a very one sided "interview". They then didn't bother follow up on the interview for over a month, when I got a rejection email. Does not recommend.