I have a "wired" network in the house from years ago.
In the south most room I have a wireless router that reaches the "slave quarters" where my daughter lives. (Next house south.)
In the north most room there is another wireless router, on a different channel different name, that reaches to the barn and beyond.
Before I used "bridge mode" to reach out and connect the south network and the north network.
Now I am using "extender mode" to rebroadcast on the same channel and name.
>My house and the south house are covered by channel 1
>My house and the barn are covered by channel 6.
The phone does not know if it is connected to the "barn" or the "N-house router". Same channel and name.
Then I use a directional antenna to reach 1000 feet to the green house.
And I use a third channel and a very directional antenna to reach five miles to town to get on the internet.
What I am trying to say is that you can have many wireless routers in one house.