DL 886 then DL 2020 at Atlanta
Tucson → Atlanta → Oklahoma City
Timetable, Atlanta time
11:22DL 886 from Tucson at the gate
11:20DL 2020 to Oklahoma City leaves the gate
23 h 58 apart on the timetable, overnight
DL 2020 leaves 23 h 58 after DL 886 arrives on the timetable: more than half a day, so not a connection we count.