UA 1886 then UA 3902 at Houston
San Francisco → Houston → Newark
Timetable, Houston time
05:41UA 1886 from San Francisco at the gate
11:00UA 3902 to Newark leaves the gate
5 h 19 apart on the timetable
The last days
UA 1886 and UA 3902 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.