UA 4492 then AA 2640 at Houston
Birmingham (Alabama) → Houston → Austin
Timetable, Houston time
13:04UA 4492 from Birmingham (Alabama) at the gate
17:25AA 2640 to Austin leaves the gate
4 h 21 apart on the timetable
The last days
UA 4492 and AA 2640 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.