I think what he's trying to say is to run two amps simultaneously -
First, you need a splitter.
Secondly, you want to run each setup in its own effects loop.
Thirdly, you are under the impresison that the GForce is capable of handling separate L and R "effects channels".
You would like to process two separate stacks using one G-Force.
This should be a common scenario - Dual Tone Setups, and using two different stacks and mixing between the two as separate entities.
I have not done this yet - just acquired my GForce within the last few weeks and still trying to work out the effects tweaks BUT, I am going to be trying to do something similar.
Adding a Lehle splitter.
Have a second stack (bogner - #1, soldano #2).
The marketing material leads one to believe this type of setup is expected. The documentation that is shipped with the unit + the User Manual list a "dual tone" setup as a secondary Cab off of a single head - this is the only example that is given via schematic, and it is not 2 separate stacks, but one single stack with 2 cabs.
Apparently this person's results are inconclusive.
I would be interested in hearing if this is a limitation before I go and invest in more gear to achive this - because if the answer is I have to buy another rack GForce @ $1500, then my answer is going to be a resounding "no". I can get there a heck of a lot cheaper with other gear.