Coachmen Class exhaust system - Ford or Coachmen warranty?

[KDee]

We have a 2021 Freelander in need of repair, but not sure which warranty the repair falls under. The exhaust pipe from the catalytic converter to the muffler is missing hangars, and one of the remaining metal hangars has worn a hole in the pipe.

We were told Ford has the chassis warranty, but Coachmen cut and extended the frame so will Ford refuse responsibility?

Thanks!