GSK AI ML Engineer interview questions

Most bizarre interview process I've ever had. A GSK recruiter contacted me on LinkedIn and said my background is a good match. I applied online and was rejected in one day. Interestingly, another recruiter from GSK emailed me a day or two later and wanted to proceed to the next stage. I got an interview with the hiring manager, who is the ML engineer on the team for the role. During the interview, they asked many specific questions about my qualifications and said they want to figure out the "timeline". These questions (see below) were not the questions you typically hear in a hiring manager interview. The questions were asked in a way that made me felt like they were trying to see if I lied on my resume. For example, they asked what I liked about my master's programme (Note that the interview was not conversational at all, and they asked the question in a flat tone, so it sounded like they were trying to check if I really did a masters programme. Also, they visited my LinkedIn profile twice, before and after the interview.) I am a foreigner and a career changer, so my resume is a bit non-traditional, but still, I have never been questioned about my qualifications. Anyway, on the same day, I received an automatic email from the application portal saying that they've found someone with closely matching "qualifications". The feedback wasn't very helpful (because I do have the qualifications listed on the job post), so I wanted to ask for more specific feedback. Unfortunately, the email was automatic so I couldn't reply to it. Almost forgot to mention this: the first recruiter told me that it was a "multi-hat position" for a certain AI team at GSK, but the hiring manager said otherwise. (The interview started without introducing the role, the team, and the company, which was unusual for an initial interview).

The whole interview process took roughly a month from application to offer. 1. HackerRank 2. Hiring Manager 3. Technical (theory) 4. Technical (coding) 1. was a 90 minute test whilst 2-4 where 1 hour interviews. 4. Required me to share my screen and answer some Python questions without referring to the internet.