K4 785 then DL 2570 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
11:15K4 785 from Anchorage at the gate
11:00DL 2570 to Boston leaves the gate
23 h 45 apart on the timetable, overnight
DL 2570 leaves 23 h 45 after K4 785 arrives on the timetable: more than half a day, so not a connection we count.