2 nodes: a send super cable and a receive super cable.
The role of the super cable is to allow the user to use a unique variable name: "foobar" so that all downstream "foobar" variables automatically connect together. Similar to spooky send and receive but an exact replication as opposed to connecting cables and then hiding. Very useful for use in subcompositions when you want to allow copies of nodes to access same data.
Obviously the super cable has to know not to connect 2 cables to 1 input- so only outputs can stream to multiple inputs. User would be warned not to proceed- (like feedback warning)