Let's setup another hypothetical: You are in a non-liftgate pup delivering to a residence. Your delivery is two skids of about 60 pieces of flooring. The customer has no means to get it off the pup. She's paid for Residential delivery. Realistically the only way to do it is to break it down and hand it off to her.
Do you charge for a liftgate delivery in this case?
Nope. Unless customer wants to pay for re-delivery w/LG, it's hand unload 1 pc at a time, I'm pd by the hour.