GG 9720 then AA 2472 at O'Hare
Indianapolis → Chicago → Atlanta
Timetable, Chicago time
19:22GG 9720 from Indianapolis at the gate
19:20AA 2472 to Atlanta leaves the gate
23 h 58 apart on the timetable, overnight
AA 2472 leaves 23 h 58 after GG 9720 arrives on the timetable: more than half a day, so not a connection we count.