I hope you have documentation of all this... pics of the pipe, your tail gate....
I could snap pics of some 1" pipe and my tailgate any day I'm in my gagage, my point was, there was NO pics taken when the accident occoured. There is no way to say that he even hit the poles and not my hitch or the bumper while falling.
Most Cabover campers extend 2' or more past the tailgate, all those hitch racks and motorcycle stands for trailer hitchs extend the cargo up to 48" past the taillights. If someone runs into any of those should the owner be liable?
My trucked was parked and I was in my house, this was nothing more than an accident and I hate Ambulance chasing lawyers.