Network set to 5ghz only - Deco's connecting to each other at 2.4ghz
I recently changed my network settings to use 5 ghz only. I have 2 Deco units on the same floor in my house about 20' apart. Everything seems to be working properly but I notice when I open the app and look at my satellite deco, it says it's connected to the main deco at 2.4ghz. I've moved the satellite deco around even putting it in the same room as the main deco (no obstacles in between) and it still reads 2.4ghz.
If I have my network setup for 5ghz only is it normal for the deco units to connect using 2.4ghz? Could this be necessary in case I want to setup another network using 2.4ghz only?
More of a curiosity.
Thanks.
Steve