That does make sense ya. I was not holding the clutch it while running, however, the engine ran under ten minutes one time, and only a few minutes a couple of other times.
Definitely needs to be opened up and inspected. That’s not a super long run time though. If it was assembled 100% dry it’s long enough that it could be cooked. If it was assembled with some assembly lube or if the bearings were soaked first it might not have been long enough to burn that off. Just gonna depend on the assembly practices of the shop and your brand of luck.