WN 596 then AS 277 at San Francisco
Los Angeles → San Francisco → New York JFK
Timetable, San Francisco time
13:05WN 596 from Los Angeles at the gate
13:43AS 277 to New York JFK leaves the gate
38 min apart on the timetable
The last days
WN 596 and AS 277 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.