The HR and interviewers were really nice, one of the very few times I felt like it was an interview and not a contest to prove who's smarter. The consulting HRs were also pretty nice till I stopped hearing from them :p They give you feedback, tips, areas to improve on and are available to answer any questions you have.
The first round was a call with one of the architects and she was pretty knowledgeable and asked a lot of general architectural questions. The second round was with a manager which was more about higher-level architectural questions and deeper questions about AWS services and general working of the web. I had two rounds of interviews and didn't hear back from them after, so I'm taking it as a rejection. Was actually looking forward to hearing back :(