AA 2064 then DL 5780 at Boston
Miami → Boston → Cincinnati
Timetable, Boston time
10:18AA 2064 from Miami at the gate
17:10DL 5780 to Cincinnati leaves the gate
6 h 52 apart on the timetable
The last days
AA 2064 and DL 5780 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.