F9 4409 then WN 3050 at Atlanta
Washington → Atlanta → Dallas
Timetable, Atlanta time
23:13F9 4409 from Washington at the gate
17:15WN 3050 to Dallas leaves the gate
18 h 02 apart on the timetable, overnight
WN 3050 leaves 18 h 02 after F9 4409 arrives on the timetable: more than half a day, so not a connection we count.