[uh-oh]

Rhaegar was holding the first aegon. The one the mountain killed in the show, and the one that is marching on storms end in the books.

That vision could be real, meaning it happened, but it has nothing to do with the prophecy.

Rhaegar never held jon/aegon. Elia martell was barren adfter the first two kids and rhaegar was obsessed with the prophecy so he married lyanna to have another child, since "the dragon has 3 heads"

But he had no special insight, he didnt create the prophecy, he was just trying to fulfill it.