I have a companion with me, and unless I enter into a Conversation with them, I can't hear the NPCs when I am supposed to listen to them. None of the Scripted Scenes have any Audio unless I get my companion as close as possible that activate them. Even then, the volume is quite low.
Enjoy the game, life is what you really want to be worried about.
PakKat "Everything was going well, until I died"
Gary Gravestink "I am glad you died, I needed the help"