I first met up with the hiring manager; while she was interviewing me, the head of the department I was supposed to work with joined in, and everything went off from there. He was not sure what he was supposed to ask, and he seemed confused. Well, I never heard from them again, and I sent a follow-up email, and still nothing yet.
People spend time preparing and transporting themselves to locations; it is only fair to get feedback after interviewing.