I watched Nvidia pitch, and this will be aworrying trend for "offline" gamers, as to use this in-game feature, when the player speaks with the NPC, the game has to connect to nvidia servers for speech processing, and sent back to the game npc, so it's done on nvidia cloud! I fail to see how you can play such game offline.
It's very odd given that they are shilling their latest AI capable GPUs that somehow cannot handle speech processing, instead your voice will be synthized by Nvidia cloud if you want to play an AAA game.