DL 918 then DL 2020 at Atlanta
Phoenix → Atlanta → Oklahoma City
Timetable, Atlanta time
11:25DL 918 from Phoenix at the gate
11:20DL 2020 to Oklahoma City leaves the gate
23 h 55 apart on the timetable, overnight
DL 2020 leaves 23 h 55 after DL 918 arrives on the timetable: more than half a day, so not a connection we count.