5X 606 then AA 6246 at O'Hare
Louisville → Chicago → Nashville
Timetable, Chicago time
04:225X 606 from Louisville at the gate
17:16AA 6246 to Nashville leaves the gate
12 h 54 apart on the timetable
AA 6246 leaves 12 h 54 after 5X 606 arrives on the timetable: more than half a day, so not a connection we count.