Sysmodule for passing audio to unsupported USB headphones?

[SMNFXCN]

I'd like to listen to the game audio through my headphones, they have a USB wireless dongle that automatically connects once the headphones are turned on.
But I tried using these (Razer Nari Ultimate) on my Switch, both through a USB-C to A dongle, or just connecting it on the dock. The Switch doesn't recognize them, as headphones that are recognized show a headphone icon with "USB" underneath. IIRC since 4.0.0 the Switch has been able to use USB headphones... so is there any way to get it to work? I don't care about the microphone functionality. I just care about the game audio. And no they don't have bluetooth.
They work on other consoles like PS4/5 and PC.