Printfection interview questions

Was initially contacted on LinkedIn. Everyone was nice to talk to, and things went pretty smooth until the last interview. Had a Zoom interview (30 minutes), then another Zoom interview a couple days later(1 hour), then another another week later (45 minutes), then another which was 2.5 hours long. In that long interview they asked me a lot of questions about high school, which was about 20 years ago for me, along with going over every job I've ever had. Not only was it incredibly long, it focused a huge chunk of the time on what I did 15-20 years ago. The oddest interview I've ever encountered. I must admit, that last interview made me much less excited about the company that I had been previously.