That entire hospital scene between Hook and Neal in 3×15 is confusing in light of the confirmation that Neal sent the message to Hook in 3×19. I had thought the reason Neal couldn’t remember merging with his dad was due to him being cursed to forget the missing year along with everyone else, besides Zelena and Hook. Yet, Neal thanked Hook for getting the message to Emma, suggesting he remembered sending the bird during the missing year. Then again, he didn’t remember bringing back his dad from the dead, paying the price with his life, or being absorbed either. Selective amnesia?
"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy