[Alan Anderson]

The communication between the cRIO backplane and the plugin modules uses very very very fast signals. If you pair up signals inappropriately, you will introduce noise that can disrupt the connection. If you make the extension too long, you will introduce time delays that can disrupt the connection. If you don't pay close attention to transmission line effects, you will create signal echoes that can disrupt the connection.

Bottom line: don't expect it to work.