DL 1323 then DL 746 at Atlanta
Miami → Atlanta → Denver
Timetable, Atlanta time
19:10DL 1323 from Miami at the gate
18:58DL 746 to Denver leaves the gate
23 h 48 apart on the timetable, overnight
DL 746 leaves 23 h 48 after DL 1323 arrives on the timetable: more than half a day, so not a connection we count.