K4 537 then DL 4917 at O'Hare
Anchorage → Chicago → New York JFK
Timetable, Chicago time
23:39K4 537 from Anchorage at the gate
18:00DL 4917 to New York JFK leaves the gate
18 h 21 apart on the timetable, overnight
DL 4917 leaves 18 h 21 after K4 537 arrives on the timetable: more than half a day, so not a connection we count.