GitLab interview questions

Received an email from Gitlab approx a week after sending in my application. Questionnaire of 10 questions asking how you would respond to and resolve certain customer issues. I got another email from HR Person requesting a meeting via online meeting platform. Approx 30-45 mins. Basic questions that they have in their handbook. NO tricks or deviations for what was basically stated in handbook. Why do I want to work for them? my work and interaction style, very upfront with salary expectations and benefits. Very clear that if they were interested they would contact me for another meeting or let me know if they were no longer interested. Was contacted for another meeting with Service Support Manager ( who this role reports to). Good meeting, very clear and ready to answer questions. Asked SMART questions mostly. Showed concern about any challenges regarding ability to work and willingness to train and accommodate learning curve. All left me feeling very positive. Next meeting was with Director of Engineering. Asked technical questions which stumped me a little because all was written in my resume and I had been asked the same things prior to that. I finally felt the need to ask if the skillsets he repeatedly asked for were a make or break requirement for the role. My previous understanding was different. The final meeting left me feeling very unsure and as if I had hidden something or got overly comfortable to quickly. This meeting I was told would be about an hr to 90 mins. We were done in approx 45 mins. I had no other questions for him because I had asked them previously and their handbook as I said before is very comprehensive. Full of information . I got an email the following day, very nice one thanking me for taking time to interview with them but they had decided not to proceed with my application. I responded in kind and asked for feedback as to why they felt we were incompatible. The interview process while thorough, transparent and a good model, I felt was a bit of overkill for the role I was applying for. They did let me know that this section of the support area was a recent development as of January and they were still working on figuring out how best to model it. I was of the impression this would be tier 1 ticket support with basic break/fix issues and escalate to specific teams otherwise. I like the company and they look good in theory and a great place to work and learn a lot from.