DL 2804 then AA 6336 at O'Hare
Boston → Chicago → Lexington
Timetable, Chicago time
22:36DL 2804 from Boston at the gate
21:35AA 6336 to Lexington leaves the gate
22 h 59 apart on the timetable, overnight
AA 6336 leaves 22 h 59 after DL 2804 arrives on the timetable: more than half a day, so not a connection we count.