AA 5645 then AA 2131 at Charlotte
Pittsburgh → Charlotte → Saint Martin
Timetable, Charlotte time
15:26AA 5645 from Pittsburgh at the gate
08:25AA 2131 to Saint Martin leaves the gate
16 h 59 apart on the timetable, overnight
AA 2131 leaves 16 h 59 after AA 5645 arrives on the timetable: more than half a day, so not a connection we count.