DL 1007 then F9 3097 at Atlanta
Washington National → Atlanta → Dallas-Fort Worth
Timetable, Atlanta time
21:41DL 1007 from Washington National at the gate
18:21F9 3097 to Dallas-Fort Worth leaves the gate
20 h 40 apart on the timetable, overnight
F9 3097 leaves 20 h 40 after DL 1007 arrives on the timetable: more than half a day, so not a connection we count.