AA 2644 then 7L 9790 at O'Hare
Pittsburgh → Chicago → Houston
Timetable, Chicago time
09:05AA 2644 from Pittsburgh at the gate
12:207L 9790 to Houston leaves the gate
3 h 15 apart on the timetable
Today
From the airport’s board at 11:47 Chicago time
09:05AA 2644 due at the gate, no estimate yet
12:207L 9790 due to leave, no estimate yet
3 h 15 between the gates, on these times
The last days
AA 2644 and 7L 9790 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.