WN 1801 then AA 552 at Atlanta
Denver → Atlanta → Dallas-Fort Worth
Timetable, Atlanta time
18:35WN 1801 from Denver at the gate
17:29AA 552 to Dallas-Fort Worth leaves the gate
22 h 54 apart on the timetable, overnight
AA 552 leaves 22 h 54 after WN 1801 arrives on the timetable: more than half a day, so not a connection we count.