AA 1775 then AA 1297 at Charlotte
Richmond → Charlotte → Detroit
Timetable, Charlotte time
10:35AA 1775 from Richmond at the gate
17:08AA 1297 to Detroit leaves the gate
6 h 33 apart on the timetable
The last days
AA 1775 and AA 1297 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.