FJ 6002 then AA 597 at San Francisco
Calgary → San Francisco → Chicago O'Hare
Timetable, San Francisco time
16:50FJ 6002 from Calgary at the gatealso AM 7061
17:22AA 597 to Chicago O'Hare leaves the gatealso QF 4712
32 min apart on the timetable
The last days
FJ 6002 and AA 597 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.