GG 9720 then AA 1073 at O'Hare
Indianapolis → Chicago → Buffalo
Timetable, Chicago time
19:22GG 9720 from Indianapolis at the gate
19:00AA 1073 to Buffalo leaves the gate
23 h 38 apart on the timetable, overnight
AA 1073 leaves 23 h 38 after GG 9720 arrives on the timetable: more than half a day, so not a connection we count.