DL 1386 then DL 490 at Atlanta
Miami → Atlanta → New York LaGuardia
Timetable, Atlanta time
20:35DL 1386 from Miami at the gate
20:30DL 490 to New York LaGuardia leaves the gate
23 h 55 apart on the timetable, overnight
DL 490 leaves 23 h 55 after DL 1386 arrives on the timetable: more than half a day, so not a connection we count.