The more I think about it, the more I think Neal could be in 522. “Only You” is a song that Neal first played for Emma, and taught Henry about the song. Henry of course used the song on Violet, and we already know this is a heavy Henry/Violet episode. Then this episode takes place in NYC, and I recall they filmed on the same street where Neal’s apartment is located. Not to mention, Rumple is in NYC in the episode, too. So I think we could either get a flashback of the time Neal talked to Henry about “Only You”, or Neal could appear to Henry in a dream sequence just like he did with Emma. If it’s the latter, it would finally give Neal and Henry the opportunity to say goodbye. This also wouldn’t be the first time that MRJ filmed for OUAT under secrecy, and I’m sure he would have taken greater measures to keep it that way this time around. His cover was blown last time due to Mark Isham’s leak, Sean Maguire posting pictures with him on Instagram, and 512 screeners going out to the press.