JamesH
That Guy
This doesn't seem at all simple. It could be very complicated and illegal, or it could be just fine. If at the end of the transaction, everyone filled out their own, separate 4473s and 77Rs, and all the FFLs Bound Books listed the correct buyers, it could be fine. You would probably have to coordinate in advance with the FFL01 and the auction house to ensure bookkeeping is done legally, but if they won't break up the lot, well-intending, law-abiding citizens should be able to make this work.
I would bet on the auction house resisting doing that much work, though.
I would bet on the auction house resisting doing that much work, though.