Instructure Senior Frontend Engineer interview questions

It was a four round interview process. The first round was an online test containing a 14 question quiz and two coding challenges. I had 75 minutes for these which wasn't enough, but they said it doesn't matter, just do as many as I can. It was fun. After that I had two one-hour interviews with tech leads of their two products. These interviews were half-hour long talks and half-hour long coding/architecture planning. Then I had an online interview with a team lead developer, same half-hour talk, half-hour coding. The last round was an online interview with the VP of the product I was selected for. And it was again a half-hour talk and half-hour coding. Everyone was super-kind and professional, the only downside that I hadn't got an offer and the reason was really confusing, as I applied to frontend dev position and they said unfortunately I have a very frontend heavy hands-on experience. There were a lot of overlaps between the interview questions.