I guess I didn’t word my question right- sorry - so can I replace the SR203 with the main deco as a router? I believe to do this the Deco75pro needs to connect directly to the ONT modem and must...

Hi All, forgive me if none of my tech jargon makes sense as my understanding of it is basic. So I am about to receive some new Deco XE75 Pro's. MY ISP provider is Sky via FTTP with a Sky SR203...