5X 5602 then AA 603 at O'Hare
Louisville → Chicago → Washington National
Timetable, Chicago time
18:075X 5602 from Louisville at the gate
17:01AA 603 to Washington National leaves the gate
22 h 54 apart on the timetable, overnight
AA 603 leaves 22 h 54 after 5X 5602 arrives on the timetable: more than half a day, so not a connection we count.