AA 2731 then CA 1020 at O'Hare
Tampa → Chicago → Shanghai
Timetable, Chicago time
16:55AA 2731 from Tampa at the gate
19:30CA 1020 to Shanghai leaves the gate
2 h 35 apart on the timetable
Today
From the airport’s board at 02:45 Chicago time
16:55AA 2731 due at the gate, no estimate yet
19:30CA 1020 due to leave, no estimate yet
2 h 35 between the gates, on these times
The last days
AA 2731 and CA 1020 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.