I want to see them run for 24 hours straight in the same position with no interference. If they pass that, I want to see them do it for a week straight. If they pass that, 1 year. Then we'll talk.

Or a certain amount of time where they constantly go from say 2k-4k rpm gradually up and down without any of them touching.

Also, correct me if I'm wrong, but generally aren't gears are used to transfer power? Why would you need to connect two powered gears spinning at the exact same speed?

Normally you wouldn't use the product in question this way. This is just a demonstration to show that the three "outputs" remain perfectly synchronized to a high level of precision.

I just want a cheeseburger.

It's just a way to show how syncronised the gears are. It's not intended as a practical mechanism as it is.

To run at this level of syncronisation there must be a very effective monitoring and feedback system. It's not just mechanical syncing that will drift over time (like a watch will lose a second a day or so). If it can do this demonstration, correcting for the effect of the movements and turns on the speed of the gears, then it will just keep correcting for as long as you want.

I just wanted to jump on the bandwagon that quotes you.