I think SquirrelTail wants to use two receivers to drive different parts of the airplane, like one four channel doing left throttle, aileron, rudder, and elevator while the other one drives right throttle, aileron rudder and flaps or something.
For some reason he can't use a 6 ch and run wires, though (I'm thinking of a twin boom wir really, really big separation between the booms or something detachable that has control surfaces and/or needs to be able to deploy a parachute after separation...), or maybe two 4-channels are cheaper than one 8-channel RX.
Maybe you can enlighten us on that,
@SquirrelTail?