AA 3620 then 1I 605 at O'Hare
Huntsville → Chicago → St Louis
Timetable, Chicago time
08:30AA 3620 from Huntsville at the gate
11:301I 605 to St Louis leaves the gate
3 h apart on the timetable
Today
From the airport’s board at 15:15 Chicago time
08:15AA 3620 reached the gate15 min early
10:461I 605 left the gate44 min early
2 h 31 between the gates
The last days
AA 3620 and 1I 605 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.