Simple scenario. I set up a stereo drum submix by pairing Sub A and B and assigning the drum channels to it, and I'd like to return it to open inputs to use as a source for ear mixes. Pretty sure it's possible to do using analog pathways, but I'd prefer not to incur another A/D-D/A stage with the attendant latency penalty.
Pretty sure I can do this in the Dante world using Dante Controller, but I'm not very familiar with AVB.