I had one HR round which went well. 2 technical rounds which took two weeks which went well. I then had no contact with them for like 1 month and they tell me the position had been delayed and I could interview for another team. I had an interview the same day with an architect ( at this point I had 4 interviews). I was then ghosted by HR. None of the interviewers had talked to one another and asked me question completely irrelevant to the work.