DL 420 then AA 6283 at O'Hare
Savannah → Chicago → Des Moines
Timetable, Chicago time
13:13DL 420 from Savannah at the gate
11:54AA 6283 to Des Moines leaves the gate
22 h 41 apart on the timetable, overnight
AA 6283 leaves 22 h 41 after DL 420 arrives on the timetable: more than half a day, so not a connection we count.