AA 1937 then DL 5845 at Philadelphia
Miami → Philadelphia → Boston
Timetable, Philadelphia time
09:45AA 1937 from Miami at the gate
09:00DL 5845 to Boston leaves the gate
23 h 15 apart on the timetable, overnight
DL 5845 leaves 23 h 15 after AA 1937 arrives on the timetable: more than half a day, so not a connection we count.