DL 1444 then DL 1734 at Atlanta
Washington → Atlanta → Toronto
Timetable, Atlanta time
14:24DL 1444 from Washington at the gate
14:07DL 1734 to Toronto leaves the gate
23 h 43 apart on the timetable, overnight
DL 1734 leaves 23 h 43 after DL 1444 arrives on the timetable: more than half a day, so not a connection we count.