WN 3534 then DL 2939 at Atlanta
Pittsburgh → Atlanta → Memphis
Timetable, Atlanta time
18:45WN 3534 from Pittsburgh at the gate
18:26DL 2939 to Memphis leaves the gate
23 h 41 apart on the timetable, overnight
DL 2939 leaves 23 h 41 after WN 3534 arrives on the timetable: more than half a day, so not a connection we count.