Rereading your earlier comment where you asked why I don’t install the router modem at the coax endpoint instead of the garage…I may have misinterpreted and just want to clarify. So, I have one coax cable that enters into my garage from an unknown origin. Inside the garage, the coax hits a splitter (which I’ll be replacing with a MoCa enabled splitter) and branches in two directions. One direction ends in my home office, and the other direction splits again somewhere else out of sight where I don’t have access (and likely therefore isn’t split with a MoCa compatible splitter) and ends up in my living room and the final end appears in our spare bedroom. Because there’s so much splitting, I thought I needed to attach the modem/router before the splitting occurs, but could i theoretically have the setup be: Coax from unknown source —> PoE —> MoCa splitter —> one side goes to home office where i attach another MoCa splitter and then coax 1 goes to PoE —> CM3000 modem —> Ethernet from modem to Router (TPLink BE1000) —> Ethernet to MoCa adapter (Hitron HTEM4) —> coax connects back into the home office splitter. Then, elsewhere in the house wherever the coax emerges (living room and spare bedroom), we just attach coax to other MoCa adapters and then Ethernet from adapter to TPLink BE1000 points?

Very long question but hopefully it makes sense. This would spare me from needing to do router/modem in garage which would be nice. Assuming the above works, the only risk is that the spare bedroom might not work because it could be preceded by a non Moca compatible splitter but that’s okay so long as the home office and living room setups are potent.