Nope, Sorry. 
NC precludes a splitter without some sort of selector switch.
When people ask me the pros and cons of NO vs NC that is the ONLY pro for NO.
The ATC Tool Carousel and Tool Setter system I designed can use a switch to connect a single NC probe and Tool Setter to the same wire. When the Tool Setter carriage moves forwards it actuates a switch that connects the Tool Setter to that single input. Retracted it disconnects the Tool Setter.
In that scenario you cannot use the Tool Setter and the probe at the same time, but that would not be the normal operating procedure anyways.