The art of dinner conversations obviously developed later. Since his was the first threefold bond ( according to wt talk outlines) and Jah talked to them directly, why not the trio to have had a real discussion over the fruit plate about that,-- with all the scenarios (prophecies) laid out? It was not about continuing sex. That co-pulation would have happened whether Adam ate or not. Had he not eaten, his would have been eternal sex with another perfect woman, ( a possible x-generation grand-ggg overlapping generation daughter) --for a perfect Jesus was produced out of mary, the "second Eve" so to speak. Perfect daughters would have born to eve.
It is amazing what results, when you have a story that insults your intelligence. Talking snake and the creator walking in the garden in the breeze. cheese!