Who I have the same questioned this topic

Hello,

I just had Verizon Fios installed, but still want to leverage my existing mesh network. Currently, Fios comes in through my basement and is where the Tech installed the router. My current mesh network is connected to a modem via coax in an upstairs bedroom (previously had Xfinity). The Verizon router is right next to the whole house coax splitter, so I am wondering if I can connect the coax splitter directly to the Verizon router and then buy a MoCA device where the coax comes out for the mesh network router in the upstairs room. I believe I would then have two networks (which is ok), the Verizon router network and my existing mesh network. Do I only need one MoCA device or do I need something extra? Are there any issues with my plan? 

I am hoping this setup works:

ONT>(ethernet cord)>Verizon Router>(coax cable)>Whole House Coax Splitter>(coax cable)>MoCA>(ethernet cord)>Netgear Orbi

Thank you,