AA 4778 then N3 4321 at Houston
Philadelphia → Houston → Santa Clara
Timetable, Houston time
13:55AA 4778 from Philadelphia at the gate
14:47N3 4321 to Santa Clara leaves the gate
52 min apart on the timetable
The last days
AA 4778 and N3 4321 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.