ET 3608 then DL 1826 at O'Hare
Anchorage → Chicago → New York LaGuardia
Timetable, Chicago time
07:16ET 3608 from Anchorage at the gate
19:20DL 1826 to New York LaGuardia leaves the gate
12 h 04 apart on the timetable
DL 1826 leaves 12 h 04 after ET 3608 arrives on the timetable: more than half a day, so not a connection we count.