AA 4428 then AA 2656 at O'Hare
New Orleans → Chicago → Indianapolis
Timetable, Chicago time
11:00AA 4428 from New Orleans at the gate
17:21AA 2656 to Indianapolis leaves the gate
6 h 21 apart on the timetable
The last days
AA 4428 and AA 2656 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.