2215 is an "interesting" run in that the power comes from Western Ave. to tie on to equipment that has been left at CUS from the morning rush hour (from 2224), then after returning to CUS as 2238 at 2:42pm, the whole train apparently* goes back to Western Ave. before coming back two hours later to be 2233 at 4:55pm. So an opportunity to change power or to have cut off the F59. That train is one of the six-car sets that are normally used Sunday (I think one of the six-car sets also makes a Saturday run). Monday, that train would normally be on 2204, deadhead 7201, and 2220 before going back to Western Ave.
* I say apparently because while I've never observed it happen, 2233 departs from Track 9 which also has departures at 3:30pm and 4:20pm so the arrival of 2238 at 2:42 clearly doesn't just sit at CUS on Track 9 until 4:55.
Roselle, IL (along the MILW West line)
ex-N&W Sandusky, Ohio