UA 505 then UA 5317 at Houston
San Francisco → Houston → Nashville
Timetable, Houston time
05:46UA 505 from San Francisco at the gate
09:50UA 5317 to Nashville leaves the gate
4 h 04 apart on the timetable
The last days
UA 505 and UA 5317 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.