The Cardinal exits Indianapolis westbound over a former Conrail line, now part of CSX, and I don't know what subdivision name CSX uses. At a railroad point called "Ames", just east of Crawfordsville, the Cardinal uses a hand-throw connection to the former Monon, then runs via the Monon to Munster, IN. My guess is that this is now all one CSX subdivision, but I don't know its name.
At Munster, the Cardinal hangs a left onto the GTW, continues a few miles to Thornton Junction, and hangs a right onto joint CSX/UP track (former C&EI). The train continues north past UP's Yard Center, crosses the IC on a bridge south of Kensington, and ends up on Metra-owned trackage (former C&WI) at 74th Street. The Cardinal then continues to 35th Street, where it gets on former CR trackage to Union Station.
At Munster, the Cardinal hangs a left onto the GTW, continues a few miles to Thornton Junction, and hangs a right onto joint CSX/UP track (former C&EI). The train continues north past UP's Yard Center, crosses the IC on a bridge south of Kensington, and ends up on Metra-owned trackage (former C&WI) at 74th Street. The Cardinal then continues to 35th Street, where it gets on former CR trackage to Union Station.