DL 2899 then DL 2020 at Atlanta
Austin → Atlanta → Oklahoma City
Timetable, Atlanta time
11:28DL 2899 from Austin at the gate
11:20DL 2020 to Oklahoma City leaves the gate
23 h 52 apart on the timetable, overnight
DL 2020 leaves 23 h 52 after DL 2899 arrives on the timetable: more than half a day, so not a connection we count.