Speaking from experience as a residential real estate broker for 15 years, it’s not unusual for a “seller” when signing listing with RE agent, to retain a “prospect” the seller may have shown the home to prior to signing the listing agreement.
Example - As a FSBO, Susie Citizen shows her home to Jane Doe, who is interested but needs to come up with financing. Susie Citizen finally lists the home with XYZ Realtor, but expressly retains the right to sell home to Jane Doe as a FSBO without owing a commission to listing agent. Most agents are happy to make that concession to the listing agreement. I’ve seen it happen quite a few times, all perfectly legal. If Jane Doe buys home from the seller, no commission is due to the RE company if the “exception” is in the listing agreement. The closing documents are the only thing I know that would answer exclusively how the sale was handled. MOO
I hope I explained this adequately. Moo