Hi, I have a Netgear Nighthawk Mesh Wifi system set up. The new router (MR60) is connected to the old Modem/router via ethernet (I have turned off all wireless function of this old router/modem). I intend to run ethernet cables for other devices in my house, should I connect them up to the old modem/router combo that the MR60 gets internet from? or all into the MR60? Will it make a difference?