Seamless LAN between Starlink/mobile RV to Home ISP internal LAN

I am doing a smart home implementations in both my residence and my motorhome/RV/caravan and would like to have single network image where devices in either subnet can reach the other.

I have a first generation balance 20X in the RV.

What are some tactics/implementations that I can use to achieve this?

Any white papers or video’s that directly address this situation where both end points are behind carrier grade NAT?

Thanks