Chain mode + K25M keyboard

[moaikun]

I have a JU06A and I've been thinking about getting a second one to get 8 voice polyphony in chain mode. I also have a K25M connected to my JU06A.

What I'm wondering is... is there a way to have two K25M keyboards hooked up to the chained boutiques to create one continuous 50 note keyboard when laid side by side? I couldn't find a reference to it anywhere so I'm guessing it's not possible, but I thought it was worth asking.