I have 1 Airport Extreme (newer version) and 3 AirPort Express's (1st gen) in my house. I understand that physically connecting all 3 Express's over ethernet and setting to "Create Network" is the best option (according to this article), however they are not all 3 in range of ethernet.
So my question is: What is the difference/impact between the "Create Network" and "Extend Network" options when the AirPort Express is not physically connected?
I would think that "Create Network" in this case would literally create new wireless networks and make the situation much worse. Is that not true?