UA 714 then AA 4711 at O'Hare
St Louis → Chicago → Des Moines
Timetable, Chicago time
14:35UA 714 from St Louis at the gate
17:18AA 4711 to Des Moines leaves the gate
2 h 43 apart on the timetable
The last days
UA 714 and AA 4711 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.