AA 3346 then CA 8414 at O'Hare
Madison → Chicago → Shanghai
Timetable, Chicago time
20:30AA 3346 from Madison at the gate
20:45CA 8414 to Shanghai leaves the gate
15 min apart on the timetable
Today
From the airport’s board at 01:45 Chicago time
20:30AA 3346 due at the gate, no estimate yet
20:45CA 8414 due to leave, no estimate yet
15 min between the gates, on these times
The last days
AA 3346 and CA 8414 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.