AA 2146 then 7L 9790 at O'Hare
Boston → Chicago → Houston
Timetable, Chicago time
08:00AA 2146 from Boston at the gate
12:207L 9790 to Houston leaves the gate
4 h 20 apart on the timetable
Today
From the airport’s board at 15:07 Chicago time
08:00AA 2146 is cancelled
12:007L 9790 left the gate20 min early
The last days
AA 2146 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.