F9 4427 then DL 2020 at Atlanta
Baltimore → Atlanta → Oklahoma City
Timetable, Atlanta time
12:52F9 4427 from Baltimore at the gate
11:20DL 2020 to Oklahoma City leaves the gate
22 h 28 apart on the timetable, overnight
DL 2020 leaves 22 h 28 after F9 4427 arrives on the timetable: more than half a day, so not a connection we count.