UA 100 then UA 2289 at Houston
Sydney → Houston → Austin
Timetable, Houston time
07:50UA 100 from Sydney at the gate
13:50UA 2289 to Austin leaves the gate
6 h apart on the timetable
The last days
UA 100 and UA 2289 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.