AA 6326 then UA 3916 at O'Hare
Lexington → Chicago → New Orleans
Timetable, Chicago time
12:14AA 6326 from Lexington at the gate
07:00UA 3916 to New Orleans leaves the gate
18 h 46 apart on the timetable, overnight
UA 3916 leaves 18 h 46 after AA 6326 arrives on the timetable: more than half a day, so not a connection we count.