AA 831 then 8C 1231 at Miami
Washington National → Miami → San Juan
Timetable, Miami time
07:43AA 831 from Washington National at the gate
00:008C 1231 to San Juan leaves the gate
16 h 17 apart on the timetable, overnight
8C 1231 leaves 16 h 17 after AA 831 arrives on the timetable: more than half a day, so not a connection we count.