Is it possible? Like, say, there’s this layout:
A - B -(B1/B2)- C
B1 is a shorter way to C and naturally, B2 is much longer, and you have to escort vehicle from A to C, and defauly path is B1. You escort as far the halfway in short path, B1 but the other teams has blocked it, say blew some building, trees or whatever, blocks the way and the road can’t be made passable back. So the vehicle will turn to B and go through B2 to C. Coult it be possible?
I’d say just forget about the halway, go through B1 if it’s open, and right through B2 if B1 is blocked but then there’s the possibility of B1 being blocked while the vehicle has already entered B1 (and now I’m sure you’ll say don’t block it halfway, block it right on the entry zone)