Regeneron Sr. Scientist interview questions

Teams video call from HR - she was a relatively new employee and knew basically nothing about the position. I tried not to ask technical scientific questions but literally anything specific she failed to adequately answer and/or dodged the question. I expressed enough interest in the position that she referred me to the hiring manager. Teams video call with hiring manager - I thought my interview with the hiring manager was unusual. I'm not convinced he actually read my resume because he didn't ask me a single question about my personal scientific background or research endeavors that qualify me for the role. Within minutes of conversing he told me I was overqualified for the position because it's actually a junior role (a junior role requiring 3 years of post-doc experience? Alright). He asked me a couple technical questions which I didn't answer adequately.