DL 9979 then DL 1734 at Atlanta
Detroit → Atlanta → Toronto
Timetable, Atlanta time
15:41DL 9979 from Detroit at the gate
14:07DL 1734 to Toronto leaves the gate
22 h 26 apart on the timetable, overnight
DL 1734 leaves 22 h 26 after DL 9979 arrives on the timetable: more than half a day, so not a connection we count.