DL 1666 then DL 346 at Atlanta
Memphis → Atlanta → Denver
Timetable, Atlanta time
08:23DL 1666 from Memphis at the gate
08:10DL 346 to Denver leaves the gate
23 h 47 apart on the timetable, overnight
DL 346 leaves 23 h 47 after DL 1666 arrives on the timetable: more than half a day, so not a connection we count.