Loading or Unloading Issue under BAP and CGL Form

Our question is whether a business auto policy or a general liability policy would respond to this claim. The insured was replacing a boiler in a customer's home and in the process of removing the old boiler, the insured took it out of the home and set it on the sidewalk. During the move, oil leaked from the boiler onto the carpet of the customer and caused some damage.

There are different insurers for the auto policy and the general liability policy. Which policy should handle the damage claim?