DL 706 then DL 1700 at Atlanta
Denver → Atlanta → Memphis
Timetable, Atlanta time
18:01DL 706 from Denver at the gate
15:30DL 1700 to Memphis leaves the gate
21 h 29 apart on the timetable, overnight
DL 1700 leaves 21 h 29 after DL 706 arrives on the timetable: more than half a day, so not a connection we count.