AA 5958 then AA 1232 at Philadelphia
Greensboro → Philadelphia → Boston
Timetable, Philadelphia time
07:35AA 5958 from Greensboro at the gate
20:12AA 1232 to Boston leaves the gate
12 h 37 apart on the timetable
AA 1232 leaves 12 h 37 after AA 5958 arrives on the timetable: more than half a day, so not a connection we count.