Platform9 Systems Technical Support Engineer interview questions

I reached till 3 rounds of interview. 1st Round: Hiring Manager called me for a 30 mins phone screen with few basic linux commands. 2nd Round: A Technical Support Engineer contacted me for 30 mins, it was the technical interview and he asked the scenario based question. 3rd Round: They call me for F2F interview with 5 different engineers including director of operations. It was total 5 hours of process with 1 hour with each engineer. Interview was fine they were more interested in my current role and what I studied in my school. I was pretty positive after the interview process but didn't get the offer, it was confusing as they didn't challenge any of my technical skills and didn't gave me the offer.