I think the correct approach should be.
1- Start Selenium server
2- Start Appium Server nodes and connect them with server and devices
3- Launch the test against the Selenium Server and it shares everything to the nodes
But as I’ve seen in my workaround (all your posts also), appium server should be capable of distributing all the data through each client instance.
BTW: I’ve read about launching two different drivers from the same client configuration and connecting them with two different appium servers but I’d not know how to make it with the XML file as you’ve said here:
Really thank you @bhaskar for understanding my question exposed, it’s a pleasure seeing someone with the same doubts. It means we are not so out of the way hahah