Er, how would that work exactly? The handles are joined together by a bendy energy bit?
How would that make them any more useful than normal nunchuks? Oh and if you turned them off, they'd fall apart, but if you kept them switched on they'd burn through you. Hrmm....
Or, do you mean two lightsabers joined by a chain? That would be a bit messy wouldn't it? Why not just have two sabers?
How exactly would it even work?