The fact that you are unaware that I don't fly under Part 117 makes it apparent you don't have a clue about this industry.Company limited, as in a FOM thing (or whatever your company calls it, GOM, etc).
We cannot fly for another airline concurrently with our own, unless on a leave with approval of the CP, largely with the intent to keep 117 flight time preserved for our own shop. I assume the same for you? Cargo carve out, so precious rest rules. But still while you can fly a FedEx MD11, but on your 5 days you wouldn’t fly a 4 day trip for someone like Western Global. And if you quit FedEx (not that you would) to go to Western Global, they’d make you go through their MD11 course and have you re-learn the plane how they want it done/flown.
I have a feeling you know all this, but just trying to be difficult.
Second if someone asked me to operate their MD11 for them would I have to go-to school? Can you operate a 737-BBJ? If I was asked to ferry an MD11 to Africa would I need to go-to school.
These are all easy questions. Perhaps JetU didn't touch on it.