AA 850 then AA 2388 at Miami
Guatemala City → Miami → Boston
Timetable, Miami time
10:47AA 850 from Guatemala City at the gate
19:33AA 2388 to Boston leaves the gate
8 h 46 apart on the timetable
The last days
AA 850 and AA 2388 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.