OK before everyone rips on me, yes I do know it isn’t code until the manufacturer publishes the connection and I am only running at 40 amps because 6-3 romex from a 50 amp breaker, …
…but it is no accident that there is a good splitter in the *universal* charger base. This makes it VERY easy to do a clean install from your current 14-50 to a #6 THHN to 3/4 PVC to another charger in power sharing.
The connection to Wi Fi is a bit of a pain. Both of mine required I manually connect to the WiFi. Tesla mis printed the passwords. Once I figured out the F was actually an E and the password was entered the power sharing went quick.