AA 642 then AA 2418 at O'Hare
Dallas-Fort Worth → Chicago → Indianapolis
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
09:55AA 2418 to Indianapolis leaves the gate
20 h 45 apart on the timetable, overnight
AA 2418 leaves 20 h 45 after AA 642 arrives on the timetable: more than half a day, so not a connection we count.