@Sdaniel105 If an M5 in one building can reach an M5 in another buidling, you can setup one as the satellite of the other, and they will make a single mesh.

@Accutronman It is the same with other bands: they are always used for backhaul. You can only control what the Deco offers to the devices.

@HSBoston I was responding to your final question.

@Moodi2030 1) setup 1 is more performant, because the traffic between the router and the satellite Deco does not go via the main Deco. Not sure, however, it makes a measurable difference. 2) with...

@Wally1713 An AP sends 10 frames per second, to allow being discovered by devices. I expect, indeed, those frames to be transmitted in all directions at full power.

@HSBoston - You can simply change the Deco setting from AP to Router mode and it will know to use the existing network info. In Router mode, you will have additional option to configure your Internet...