DL 420 then AA 3802 at O'Hare
Savannah → Chicago → Springfield Branson National
Timetable, Chicago time
13:13DL 420 from Savannah at the gate
11:30AA 3802 to Springfield Branson National leaves the gate
22 h 17 apart on the timetable, overnight
AA 3802 leaves 22 h 17 after DL 420 arrives on the timetable: more than half a day, so not a connection we count.