CM 2457 then KL 6536 at San Francisco
Sacramento → San Francisco → Atlanta
Timetable, San Francisco time
21:41CM 2457 from Sacramento at the gatealso UA 5961, VA 8183
07:00KL 6536 to Atlanta leaves the gatealso DL 8770
9 h 19 apart on the timetable, overnight
The last days
CM 2457 and KL 6536 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.