DL 937 then DL 3020 at Atlanta
Tucson → Atlanta → Memphis
Timetable, Atlanta time
20:31DL 937 from Tucson at the gate
19:59DL 3020 to Memphis leaves the gate
23 h 28 apart on the timetable, overnight
DL 3020 leaves 23 h 28 after DL 937 arrives on the timetable: more than half a day, so not a connection we count.