5X 5602 then AA 3398 at O'Hare
Louisville → Chicago → Columbia Regional
Timetable, Chicago time
18:075X 5602 from Louisville at the gate
16:21AA 3398 to Columbia Regional leaves the gate
22 h 14 apart on the timetable, overnight
AA 3398 leaves 22 h 14 after 5X 5602 arrives on the timetable: more than half a day, so not a connection we count.