AA 910 then AA 3953 at Miami
Medellín → Miami → Jacksonville
Timetable, Miami time
05:05AA 910 from Medellín at the gate
16:24AA 3953 to Jacksonville leaves the gate
11 h 19 apart on the timetable
The last days
AA 910 and AA 3953 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.