Lets say you own two properties next door to one another, and the person from home B breaks a car window of the tenant of home A due to a rock that was kicked up by the mower. Would you go to the neighbor for recovery of damages, or the owner (landlord) of the property? You would go to the neighbor. If the damage was caused to the structure that the landlord owned or the property, then he would be able to make a claim with his insurance. However, the car is not the property of the landlord, or, your RV in this case, so it is not his property, so he has nothing to do with it.
Mind you, the insurance company would in turn, seek damages, or repayment from the person who caused the damage.
In your case though, the landlord's insurance wouldn't pay, and in the example I gave and your case, technically, the landlord is not at fault, the company's employee/owner is, meaning the landlord has no liability. Who hired the company is not relevant.