Galvanic isolation from router to endpoint

[Bill_Janssen (Wigwam wool socks now on asymmetrical isolation feet!)]

See

USB and i2s debate

Theoretically, no, you’re not. USB is a perfectly fine interface for moving digital data. While theoretically it might be possible to make a device that sounds in some way differently depending on which digital input is used, it would really be an extra effort to make what amounts to a broken device. Honestly, I am not sure why I2S connection between devices is even a thing. I2S is n electrical protocol for moving bits inside a device.

which thanks to the all-seeing moderators combines several different discussions held at various times into one over-arching mega-thread. My conclusion after suffering through this is that there’s no real point to trying to use i2s, and I can ignore it.