Retrobat (which is Recalbox running on windows
Sorry, but you are giving the wrong information:
Recalbox is an independent operating system. I never heard of this Retrobat, but I researched it now and I realize that it is the Emulationstation + Retroarch, which normally run on windows without needing this "Retrobat"...
You just need to create a pa**ec account, and install retrobat on the windows computer that is going to be the Host, and then connect the other devices that could be using either, linux, Android, Windows, raspberry, or whatever to the host using pa**ec as well.
This "pa**ec" program, which is necessary for what you propose, cannot be installed on Recalbox (because the Recalbox system is not intended to allow users to install programs), so, this topic has nothing to do with Recalbox.
I don't know if you really think this is related to Recalbox or if you are doing an advertisement, but regardless of what it is, because this topic is not related to Recalbox, I will lock it.