AA 4525 then 5X 603 at O'Hare
Madison → Chicago → Louisville
Timetable, Chicago time
10:09AA 4525 from Madison at the gate
22:305X 603 to Louisville leaves the gate
12 h 21 apart on the timetable
5X 603 leaves 12 h 21 after AA 4525 arrives on the timetable: more than half a day, so not a connection we count.