RicT Here and here you can see how much distance is required.
Since various other factors such as metal in the walls, wall thickness, etc. are decisive, I recommend starting with Connect Pods 2, which you can order in My Sunrise (Internet product options). If these two are not sufficient, you can order another one.
Here you can also find the difference between Connect Pod 2 and Extender. I don’t think we ship Connect Pod 1 anymore.
Greetings
Daniele