I really like the concept and everything looked and played nice, though I did struggle to work out if I'm doing it right or not. But would love to see where you take it :)
Thank you for the comment! I intend on adding a more detailed tutorial in the future, but if you manage to transfer messages by connecting the orange cable plug to the orange port on a station sending, and the green cable plug to the green port on the station listed as the receiver, you should get a transfer progress and eventually a request to disconnect.