Quite challenging HackerRank test online, then onsite, 3x1h with two interviewers each. Standard set of tasks: programming exercise, OO design and system design questions. Nothing surprising or particularly difficult for a senior developer. However, during one of the sessions the interaction with interviewers was minimal. They just watched me writing code, nodded occasionally, answered my questions, and never gave any feedback. I find this a very unusual way of interviewing.
In the end it was a no with a very laconic and vague feedback.