UA 1702 then UA 5207 at Houston
San Francisco → Houston → Chicago
Timetable, Houston time
00:23UA 1702 from San Francisco at the gate
07:00UA 5207 to Chicago leaves the gate
6 h 37 apart on the timetable
The last days
UA 1702 and UA 5207 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.