AA 3744 then DL 2242 at Boston
Washington National → Boston → Atlanta
Timetable, Boston time
12:10AA 3744 from Washington National at the gate
05:30DL 2242 to Atlanta leaves the gate
17 h 20 apart on the timetable, overnight
DL 2242 leaves 17 h 20 after AA 3744 arrives on the timetable: more than half a day, so not a connection we count.