I have an archer a7 router on my first floor.  I purchased a range extender for the second floor.  This works great.  I guess this is referred to as a mesh network?  I like this because phones, tablets, etc connect to whatever one they need to automatically and it appears as just one network when connecting.  I have a detached building i am wanting to get internet access in.  A wireless range extender is not an option.  I ran a cat 6 cable to it this week.  I used the chat feature on this website an explained what i wanted to do and expressed that i wanted one network just like it is with my range extender, etc.  The person i spoke with encouraged me to get a second router and put it in access point mode.  I will admit i am not a networking pro by any means but i still have seperate networks for each router?  Did i miss something?  Also, it doesn't appear a range extender is an option due to them only connecting wirelessly?  Will this setup work or do i need to look at something different?  I was reading about ASUS's mesh ofereing and it sounds like that may work in my situation better?