Ok so it has been bugging me for a while how the whole thing about how Allen got the memories of the 14th didn’t quite add up. Neah died decades before Allen was born, not even Cross knew how those memories got into Allen… (I know there’s this whole theory about how Past-Allen somehow de-aged? But that’s based on pure speculation and seems farfetched, even for this series…)

Also, when Cross was confronted by Apopcryphos(?), he said “He wasn’t called Allen when we first met.” which also bugged me… because if you read the Reverse Novels, Allen did briefly meet Cross before Mana died, and introduced himself as Red. He wasn’t Allen back then. Cross just realizing this when confronted with his possible death seemed to be implying something…

What if Allen didn’t have the memories of Neah when he was a child, and Cross had just mistakenly assumed he did based on his name and his association with Mana? 

The first time Allen had a dream about the 14th was after he lost consciousness, after Tyki put a hole in his heart with a Tease and removed his Innocence.
This was yet another thing that bugged me, in that scene, you never see Tyki take that Tease back out. I had assumed that particular detail was just mistakenly not included by Hoshino for a while, but I was rewatching the anime and came across this scene again, and when the dream came after it, I thought of this…

What if Tyki implanted those memories with that Tease that he never removed? 

The fact that Tyki looks remarkably like Neah has already been made clear. He may not even be aware that he did anything… but maybe Tyki was the one who triggered the 14th to start awakening?