Well, sort of.
I went to bed last night mulling over a few ideas and thoughts about the story. When I woke this morning there was the gleaming of a scene taking form and by the time I got up it was fully realised. Not sure where it came from, perhaps the subconscious piecing together bits of ideas that were swirling around.
It wasn’t anything major, just a single paragraph scene, but it fitted in nicely and spurred a few other ideas into existence for other parts of the story.
While it is no Kubla Khan, it was certainly unusual for it to arise this way.