Ok, so a friend of mine just built an addition on the top of his garage and we're trying to get internet into said addition of space. The verizon ont box is in the garage itself so we figured we could just hook up a moca adapter to the ont box with coax cable and then run ethernet cable up into the room. None of this has worked so far and im out of ideas. Is it not possible to use just a moca adapter? Do I need a bi directional coax splitter and a modem?