DL 3164 then DL 2020 at Atlanta
Birmingham (Alabama) → Atlanta → Oklahoma City
Timetable, Atlanta time
12:14DL 3164 from Birmingham (Alabama) at the gate
11:20DL 2020 to Oklahoma City leaves the gate
23 h 06 apart on the timetable, overnight
DL 2020 leaves 23 h 06 after DL 3164 arrives on the timetable: more than half a day, so not a connection we count.