Fortinet interview questions

I had a negative experience with two different interview processes at Fortinet. First applied for a role through referral, didn't get any responses back. Applied through LinkedIn for the same role 4 weeks later, HR reached out in a day and sent OA Hackerrank link. The OA was 90 minutes 5 questions easy/medium Leetcode. After one week I was informed that the test results were good but they are having a hiring freeze on the team and no one is getting hired for the role! Therefore they helped me connect with other recruiters regarding roles of interest which is nice. The second recruiter reached out about another role and said I needed to do a different OA this time 150 minutes and 7 questions. I believe I answered all of the questions correctly. I reached out to the recruiter to expedite the process since I had another verbal offer but I definitely preferred Fortinet. The recruiter called and said the manager was happy with the results. But I received two more calls after that asking weird questions about the details of my other offer which I answered honestly to the extent I was allowed. After this, they said would try to schedule the interviews as soon as possible to speed up the process. Received a call the next day that they are moving forward with another candidate who has more YoE! This is absolutely a waste of time for the candidate; I spent 4 hours in OA, passed them, and didn't even make it to the technical interview because of non-technical reasons!

It was of 3 rounds, First round was purely aptitude and coding question. second round was based on technical interview and last round was HR interview. Technical interview was too tough and focused mainly on Computer Science core subjects