AA 2418 then UA 4772 at O'Hare
Indianapolis → Chicago → Columbia Regional
Timetable, Chicago time
12:59AA 2418 from Indianapolis at the gate
12:45UA 4772 to Columbia Regional leaves the gate
23 h 46 apart on the timetable, overnight
UA 4772 leaves 23 h 46 after AA 2418 arrives on the timetable: more than half a day, so not a connection we count.