DL 2804 then AA 3377 at O'Hare
Boston → Chicago → Fargo
Timetable, Chicago time
22:36DL 2804 from Boston at the gate
20:29AA 3377 to Fargo leaves the gate
21 h 53 apart on the timetable, overnight
AA 3377 leaves 21 h 53 after DL 2804 arrives on the timetable: more than half a day, so not a connection we count.