5X 5602 then AA 2553 at O'Hare
Louisville → Chicago → Miami
Timetable, Chicago time
18:075X 5602 from Louisville at the gate
16:31AA 2553 to Miami leaves the gate
22 h 24 apart on the timetable, overnight
AA 2553 leaves 22 h 24 after 5X 5602 arrives on the timetable: more than half a day, so not a connection we count.