UA 1672 then AA 4711 at O'Hare
Hartford → Chicago → Des Moines
Timetable, Chicago time
14:32UA 1672 from Hartford at the gate
17:18AA 4711 to Des Moines leaves the gate
2 h 46 apart on the timetable
The last days
UA 1672 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.