AA 2253 then AF 2414 at San Francisco
Chicago O'Hare → San Francisco → Salt Lake City
Timetable, San Francisco time
16:22AA 2253 from Chicago O'Hare at the gatealso QF 4756
17:13AF 2414 to Salt Lake City leaves the gate
51 min apart on the timetable
The last days
AA 2253 and AF 2414 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.