CV 251 then DL 4929 at O'Hare
Anchorage → Chicago → New York JFK
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
10:30DL 4929 to New York JFK leaves the gate
15 h 30 apart on the timetable, overnight
DL 4929 leaves 15 h 30 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.