F9 4707 then DL 2423 at Atlanta
Washington → Atlanta → Oklahoma City
Timetable, Atlanta time
09:54F9 4707 from Washington at the gate
22:40DL 2423 to Oklahoma City leaves the gate
12 h 46 apart on the timetable
DL 2423 leaves 12 h 46 after F9 4707 arrives on the timetable: more than half a day, so not a connection we count.