CI 5234 then DL 2570 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
11:25CI 5234 from Anchorage at the gate
10:35DL 2570 to Boston leaves the gate
23 h 10 apart on the timetable, overnight
DL 2570 leaves 23 h 10 after CI 5234 arrives on the timetable: more than half a day, so not a connection we count.