Unloading of Vehicle is not Direct Physical Loss

The insured has a Business Auto Policy with a tractor and a trailer listed on it. The tractor has symbol 7 for collision coverage and both the tractor and the trailer have symbols 7, 8, and 9 for property damage; the tractor has collision coverage and the trailer which was attached to it does not. The vehicle was involved in a collision which it needed to be towed from, and the trailer needed to have its contents unloaded by the tow company. Would there be coverage under the BAP for the unloading of the trailer?

Connecticut Subscriber