TTRS & V50
They wont just repair that section of the car.
It will go 2 ways,
1) They repair all of it and his insurance pays
2) They repair all of it, give his insurance company a bill and give your insurance company a bill for the repair.
Two separate incidents !
Insurance will repair what's to do with them, NSF.
My insurance won't get any bill because i'm not involving them. They have no need to be involved.