KE 23 then UA 4656 at San Francisco
Seoul → San Francisco → Minneapolis
Timetable, San Francisco time
09:35KE 23 from Seoul at the gatealso DL 7860
10:20UA 4656 to Minneapolis leaves the gate
45 min apart on the timetable
The last days
KE 23 and UA 4656 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.