5X 5602 then AA 716 at O'Hare
Louisville → Chicago → Philadelphia
Timetable, Chicago time
18:075X 5602 from Louisville at the gate
17:47AA 716 to Philadelphia leaves the gate
23 h 40 apart on the timetable, overnight
AA 716 leaves 23 h 40 after 5X 5602 arrives on the timetable: more than half a day, so not a connection we count.