AA 9866 then 5X 5603 at O'Hare
Bloomington-Normal → Chicago → Louisville
Timetable, Chicago time
13:11AA 9866 from Bloomington-Normal at the gate
09:265X 5603 to Louisville leaves the gate
20 h 15 apart on the timetable, overnight
5X 5603 leaves 20 h 15 after AA 9866 arrives on the timetable: more than half a day, so not a connection we count.