I have an apple router (Time capsule) directly attached to my modem via ethernet. I purchased a MOCA adaptor (Actiontec ECB2500c) and it is working flawlessly directly attached to my smart TV via ethernet. I purchased a second apple router (Airport Express) and as soon as I connect it to the network, I lose my internet connection through the main router (both wireless and wired). This happens whether I hook up the second router as a wireless access point or a router. The internet connectivity returns as soon as I disconnect the second router. Fios help would not even answer questions about this because it is "not our equipment". Any thoughts?