Some things have changed, though most of it's probably slang and tech terms. [Ardyn and Somnus are certainly a lot more formal than he's used to.] Not a lot of people know the ancient language, and hardly anybody can understand whatever it is the Astrals speak. Hell, even if you can, they barely want to make any sense.

[This is probably better conversation for one of the Oracles, admittedly. He only speaks the one tongue, and understands?? the gods?? ...It's complicated.]

Language works weirdly here, anyway, so I don't know if I'd be able to tell the difference. Everyone understands each other just fine, but I doubt we're all using the same words.