AA 1418 then WN 8592 at Miami
Boston → Miami → Nashville
Timetable, Miami time
08:27AA 1418 from Boston at the gate
15:45WN 8592 to Nashville leaves the gate
7 h 18 apart on the timetable
The last days
AA 1418 and WN 8592 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.