AA 2318 then 8C 1231 at Miami
Jacksonville → Miami → San Juan
Timetable, Miami time
07:26AA 2318 from Jacksonville at the gate
00:008C 1231 to San Juan leaves the gate
16 h 34 apart on the timetable, overnight
8C 1231 leaves 16 h 34 after AA 2318 arrives on the timetable: more than half a day, so not a connection we count.