It was a few pages back in the thread that I talked about the TLJ scene, and how to better reconcile the image of exiled Jedi Luke from the end of TFA with depressed hobo Luke from TLJ.

The concept is that Rey’s ‘vision’ of Luke as the mysterious savior in his Jedi robes standing at the edge of the cliff is little more than a dream on her part, so when she actually arrives on the island expecting to find Luke there, he’s gone. She then goes looking for him, finding him hiding in his hut in his hobo robes, having never worn his Jedi duds at all.

It’s definitely more involved than a simple splice or two, though the scene would technically work if it was just the end of TFA spliced onto the scene from TLJ.