Background audio (AKA Discord) issues

I followed a guide for installing Discord on my steam deck, and it worked fine for the first session. Last time I tried to play, I loaded up Discord, connected, then loaded up the game. Once the audio in the game started, discord audio fully cut out. Has anyone else ever experienced this? If I switch back and forth between discord and the game, I can hear both in isolation, but not together. I'm wondering if there's some sound setting where you can allow audio output from multiple sources.