Feels like AD adopted modern interview process but have no idea how to use it. Had a 4.5 hours interview with 6 different people and every one asked me the same questions. I understand they want to know me better, so why not having one meeting where I would go over my experience and answer the same technical questions?

In the meantime, managers couldn't answer clearly how the development process is built, maybe NDA? I don't know. One dev evaded my questions, and asked me back the same immediately.

How did you debug your most difficult issue?