Basis Technologies Associate Product Manager interview questions

I was referred by a friend and began the process with a phone screen with the hiring manager. Second step was a take-home assignment to write a product requirements document for a feature. The final step after you pass is an in person interview, first with a set of developers, second with a designer, and last with the senior PM. Everyone was very nice but the hiring manager was relatively unresponsive to questions/follow ups during the process.