>DMing the penultimate dungeon
>Have the NPC say: "This is the BBEG entering his endgame. I fear that your next confrontation with him will end with either his death, or yours."
>In character, the PCs respond: "No, this feels like too soon. I fear that we're still at least one step away from his final stand."

Oh. Should I be making another dungeon now? This feels like the group telling me "It would be unsatisfying, if the game ended in the next dungeon".