As I recall Old World Blues was supposed to unlock new dialogue in Dead Money, but I played both recently and couldn't find it. Just wondering if anyone else could, thanks.

No there isn't but there are references in old world blues about events that happens before Dead Money

Yeah, and all area with the

no need to be excessive

That was just something on the wiki, never ever confirmed by the developers.

Yeah. And given how OWB.esm has no dependency on DM.esm, it's quite impossible from a game engine standpoint too.

Besides, Klein said you wouldn't be able to talk about the Big Empty with anyone due to something they did to your brain, since they didn't want you blabbing about things like Elijah, Ulysses, and Christine did.

i checked the OWB.esm directly for dialog outside of BigMT and found none.

but note that im pretty sure the inability to talk to others outside was part of the pacification field which was shut down after you got your brain back.

Nope, that was directly "fixing" your brain... So now you will say when someone asks where you got that talking armor: "I got it in the LA-LEI-LU-LEI-LO"