I don’t know about that. It would require pretty severe modification to get the nozzle mounted on the front, so it’d be pretty hard to do (and be pretty obvious on the ground), but not “impossible.”
:^)
The fuel transfer probe would be on top behind the cockpit IF is was setup for it. Then there is plumbing to run to the tanks.
Show me a link to ANY commercial 777 that’s capable of receiving in - air refueling - either from drogue and probe or boom.