DL 1867 then DL 2780 at Atlanta
St. George → Atlanta → Dallas
Timetable, Atlanta time
19:50DL 1867 from St. George at the gate
16:46DL 2780 to Dallas leaves the gate
20 h 56 apart on the timetable, overnight
DL 2780 leaves 20 h 56 after DL 1867 arrives on the timetable: more than half a day, so not a connection we count.