Help with connecting eleven rack to g-system

So first off I'm not sure if this is possible but what I want to do is connect my 11r to my 5150 III 50w and then to the G system. First thing is I am using the fx loop of the 5150 to connect it to the G system with the 4cm. I would need to somehow send power to the 11r and connect it to a loop in the g system, sort of treating the 11r like an effects pedal or another amp?



I then can connect the midi of the 11r to the g system for preset switching. Can someone explain how this can be done?