UA 790 then UA 3036 at San Francisco
Dallas-Fort Worth → San Francisco → Chicago O'Hare
Timetable, San Francisco time
09:01UA 790 from Dallas-Fort Worth at the gatealso AC 3659, NH 7373, VA 8275, NZ 9090
12:27UA 3036 to Chicago O'Hare leaves the gate
3 h 26 apart on the timetable
The last days
UA 790 and UA 3036 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.