DL 1510 then AA 2580 at Miami
Atlanta → Miami → St. George
Timetable, Miami time
11:46DL 1510 from Atlanta at the gate
11:20AA 2580 to St. George leaves the gate
23 h 34 apart on the timetable, overnight
AA 2580 leaves 23 h 34 after DL 1510 arrives on the timetable: more than half a day, so not a connection we count.