BMW Group Android Engineer interview questions

I had three interviews: one with team manager (introductions, an in-depth dialogue about their team and area of responsibility, a bit about my experience), technical interview the team and a behavioral interview with HR and head of department. First two interviews went smooth, the interview with HR felt a bit clunky: a lot of somewhat personal questions, didn't want to share salary range for this position etc. A week later I received a rejection email, after which the recruiter ghosted my request for a feedback.