AA 4997 then AA 1466 at O'Hare
South Bend → Chicago → Denver
Timetable, Chicago time
14:47AA 4997 from South Bend at the gate
15:23AA 1466 to Denver leaves the gate
36 min apart on the timetable
The last days
AA 4997 and AA 1466 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.