Amazon Senior Project Manager interview questions

I was approached through LinkedIn for an interview as they were doing a hiring event in my City (I am not US based). This was followed by some negotiation for finding a time for a phone interview (time differences are always a challenge). The actual phone interview went very well and at the end she said that she would like to send me some written questions and she needed my email address. I opted to email her so she could email me back - been a couple of weeks now with total radio silence. Not sure if this is just the way they do things or if I should take a hint. Either way I have attempted a few follow ups and have been left in the dark.

The process was straightforward. I had an intro call with the Hiring manager followed by a telephone interview. Then they got me to an in-person interview after some delay. When I got their I was arranged to speak with 7 persons including the hiring manager. The process and the questions themselves were not that difficult. Almost all of them were behavioral. I had a tricky situation with my bar raiser interview as we turned back from lunch a bit late and he didn't seem to be in a good mood. He asked me for ideas to improve their business picking up from what I told him and didn't seem satisfied with my responses.