DL 9964 then DL 460 at Atlanta
Grand Rapids → Atlanta → New York LaGuardia
Timetable, Atlanta time
18:19DL 9964 from Grand Rapids at the gate
13:30DL 460 to New York LaGuardia leaves the gate
19 h 11 apart on the timetable, overnight
DL 460 leaves 19 h 11 after DL 9964 arrives on the timetable: more than half a day, so not a connection we count.