AA 5526 then DL 5845 at Philadelphia
Toronto → Philadelphia → Boston
Timetable, Philadelphia time
09:18AA 5526 from Toronto at the gate
09:00DL 5845 to Boston leaves the gate
23 h 42 apart on the timetable, overnight
DL 5845 leaves 23 h 42 after AA 5526 arrives on the timetable: more than half a day, so not a connection we count.