DL 899 then DL 9960 at Atlanta
Los Angeles → Atlanta → New York LaGuardia
Timetable, Atlanta time
06:09DL 899 from Los Angeles at the gate
06:00DL 9960 to New York LaGuardia leaves the gate
23 h 51 apart on the timetable, overnight
DL 9960 leaves 23 h 51 after DL 899 arrives on the timetable: more than half a day, so not a connection we count.