Did you finish your interview, Turtle
How long was the interview?
In your perspective, how hard was the puzzle?
Hahah I’m desperate
I did finish it. The whole thing took about an hour for me, but the individual interview was shorter than I expected, maybe about 10 minutes? In fact, I would urge you not to worry too much - once I was in the interview, I relaxed because it was a fun experience, I made new friends and got to talk with people from other schools. Trust me, I didn't feel nervous once I was in my group and completing activites.
The math problem I got was honestly super easy. Just make sure you show all working out, and try to think of a more efficient/elegant way to solve it, as opposed to brute forcing your way to an answer.