NS does not have claim to heritage lines of the Conrail. When the government formed Conrail, the corporate name of Chicago Junction disappeared. The tracks are still around and the property titles still say Chicago Junction. The operating company went away. NYC and Penn were reincorporated when CSX and NS were cutting up Conrail. Conrail was a quasi government line until the railroad became profitable and paid back the government loans. Then Conrail issued stocks and bonds as a regular corporation. The former railroad names that make up NYC and Penn RR are not owned by NS or CSX. Conrail is still an active railroad (called Conrail shared assets).
A check of the State files show that the Chicago Junctions was incorporated on 4/13/2018.
