@AlexJPF Yes, you can do that. Router to which Deco are connected must support Deco Ethernet backhaul protocol, but most ISP Routers do.

@RAL24 You will not need to use Access Point mode.

@Woodfly You have three Deco units in Xfinity Deco mesh: one Main Deco, Ethernet wired, and two are Satellites which are connected to Main Deco wirelessly. Starting with Xfinity Satellite Deco, open...

@Almac912 You can connect Satellite Deco nodes to each other with Ethernet cable. For that to work without any possible issues, Satellite Deco in garden office should be far enough from Main Deco to...

@RAL24 Daisy wiring will work. Hardwiring Satellite Deco to each other, without switches, is an optimal solution.

@Jonas1122 Start with this FAQ document: General questions about Ethernet Backhaul feature on your Deco