Separate LAN connections required for AIO, EV Charger, PV Inverter and Gateway?

I'm having four GivEnergy devices installed at the moment, and I plan to control them locally on my network using Home Assistant. In the garage there will be the Gateway and AIO, just outside there will be the EV Charger, and in the attic there will be the PV Inverter (gen 3 5kW). Do I need to run ethernet for a separate LAN connection to all four devices? Or is it enough to connect the Gateway to the LAN and rely on that to control the others correctly and pass through data?

Welcome to a whole new word of wonder 🙂

I wired all 4 of mine up. (Though third party EV charger and PV inverter.) I see virtually no traffic from the Gateway, and lots from the AIO battery unit. I like being able to monitor the inverter and EV charger separately.

I have no regrets, and suggest you wire up all 4 if it's do-able, as it's a one-off effort and future you may well be grateful.

PianSom Awesome yep I will definitely do that then, thank you