On my Norge, Moto International did not need to remove my rear wheel. Instead, they simply loosened the plastic shroud that serves as a fender under the seat. Once it was loose, it dropped down several inches, so the mechanic could snake an articulated tool up into the bowels of the Norge to loosen those two hidden nuts.
It did not take two hours, but it probably took one hour...
Why couldn't Moto Guzzi have used captive bolts facing rearward, with the nuts easily accessible from the license plate light area?