You mean audio from from two sources at once? I didn't realize that was a feature. That's wild but I'm not going to install and use an app for just that feature

You mean audio from from two sources at once? I didn't realize that was a feature. That's wild but I'm not going to install and use an app for just that feature. My headphones will sometimes automatically switch between sources when it recognizes I'm using another device. Like when I'm listening to music on my PC, if I start browsing my phone I'll start heading audio from it instead.