AA 3056 then AA 1854 at O'Hare
Miami → Chicago → San Francisco
Timetable, Chicago time
18:14AA 3056 from Miami at the gate
19:00AA 1854 to San Francisco leaves the gate
46 min apart on the timetable
The last days
AA 3056 and AA 1854 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.