DL 420 then AA 4713 at O'Hare
Savannah → Chicago → Indianapolis
Timetable, Chicago time
13:13DL 420 from Savannah at the gate
12:29AA 4713 to Indianapolis leaves the gate
23 h 16 apart on the timetable, overnight
AA 4713 leaves 23 h 16 after DL 420 arrives on the timetable: more than half a day, so not a connection we count.