Genki Waveform is supposed to do this for two streams but it's still at the kickstarter stage so ymmv. (The pitch is primarily for Nintendo Switch users since t

Genki Waveform is supposed to do this for two streams but it's still at the kickstarter stage so ymmv. (The pitch is primarily for Nintendo Switch users since they have successfully launched three other devices to that user base to date, including a USB-C-to-Bluetooth audio adapter.)