Starting with Coax in, on Xfinity ISP, using my own non MoCa modem, and 1 of 3 Deco M9plus as the router.  Can this be used to run MoCa backhaul?  Does anyone know about using birectional splitters, Poe filters, and where those should go in the system?  Can this be setup in the interior of the house (ie living room), or does this need to be set up where it enters into the actual house, ie front bedroom closet?  Thank you in advance, as I am a technophobe/newbie in need of help!