AA 1775 then AA 1478 at Charlotte
Richmond → Charlotte → Houston
Timetable, Charlotte time
10:35AA 1775 from Richmond at the gate
12:20AA 1478 to Houston leaves the gate
1 h 45 apart on the timetable
The last days
AA 1775 and AA 1478 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.