There is a lot of gray areas of FFL transfers that many people do not think about. Some FFL dealers will give back a gun to the seller to hold it until background check comes back, and when background check clears both buyer and seller need to meet at the same gun shop and the seller passes the gun to the buyer at the gun store. Some FFL dealers will hold the gun until background check clears. Some will even hold the gun until background check clears, and if the background check gets denied, will require to run background check on the seller before they give gun back to the seller ( I am aware of one gun shop doing this). It is somewhat messy system and it is always the best to plan for all possibilities.