DL 420 then AA 3575 at O'Hare
Savannah → Chicago → Springfield Branson National
Timetable, Chicago time
13:13DL 420 from Savannah at the gate
11:20AA 3575 to Springfield Branson National leaves the gate
22 h 07 apart on the timetable, overnight
AA 3575 leaves 22 h 07 after DL 420 arrives on the timetable: more than half a day, so not a connection we count.