Multiplayer with a single vessel, with multiple control points?

[RailgunRemix]

Hey, first post, so please bear with me.

 

I'm working on a stratolaunch system, and I'd prefer to be able to have a friend fly the plane back in realtime instead of using a recovery mod.

The vessel would obviously be a large carrier aircraft with a smaller rocket or spaceplane, attached with a radial decoupler, with the carrier and the rocket each having their own respective control points (probe cores).

 

Is this possible with any mod? To have two people on one vessel? I don't believe the existing multiplayer mods can do this. Or would it just be easier to dock the two together?

Any help is greatly appreciated.