DL 818 then DL 873 at DFW
Atlanta → Dallas-Fort Worth → New York LaGuardia
Timetable, Dallas-Fort Worth time
00:22DL 818 from Atlanta at the gate
12:46DL 873 to New York LaGuardia leaves the gate
12 h 24 apart on the timetable
DL 873 leaves 12 h 24 after DL 818 arrives on the timetable: more than half a day, so not a connection we count.