AA 1838 then AA 1232 at Philadelphia
Charlotte → Philadelphia → Boston
Timetable, Philadelphia time
07:40AA 1838 from Charlotte at the gate
20:12AA 1232 to Boston leaves the gate
12 h 32 apart on the timetable
AA 1232 leaves 12 h 32 after AA 1838 arrives on the timetable: more than half a day, so not a connection we count.