My apologies, I’ve clearly completely misunderstood this.No, only the router it is running on.
I did a search a while back for how to extend all 3 guest WiFi networks to nodes or APs and I’ve clearly incorrectly recalled it was possible via Yazfi.
For reference, is there actually a way to do this (that doesn’t involve all routers and nodes being Pro routers on 3.0.0.6)?