I didn't notice a connection between Rey and Ben other than their force chats, so it seemed really unnecessary. I also don't like how little old Palp was defeated using the same move twice. In ROTS, Mace Windu deflected Palpatine's lightning back at him, and in TROS, Rey does the same. Palpatine's lightning is clearly more powerful than it was in ROTS. Rey shouldn't be able to block an attack that almost destroyed a fleet, or maybe she should since she's just that powerful, idk.