an interesting thought !
the jacks in the modules are of the breaking type so I guess it would
a way to bring the inputs and outputs from one module to another would be to change the din connectors of the modules/191j to a type with more pins and route those signals up/down thru the 191j that way
(there are some unused din connector pins in some of the modules, but not
many enough to carry both in and output signals x2)