AA 5375 then UA 1079 at Charlotte
Cleveland → Charlotte → Washington
Timetable, Charlotte time
10:05AA 5375 from Cleveland at the gate
19:55UA 1079 to Washington leaves the gate
9 h 50 apart on the timetable
The last days
AA 5375 and UA 1079 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.