UA 3797 then VA 8105 at San Francisco
Louisville → San Francisco → Chicago O'Hare
Timetable, San Francisco time
22:20UA 3797 from Louisville at the gate
08:20VA 8105 to Chicago O'Hare leaves the gate
10 h apart on the timetable, overnight
The last days
UA 3797 and VA 8105 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.