CV 12 then DL 2816 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
19:11CV 12 from Anchorage at the gate
15:05DL 2816 to Boston leaves the gate
19 h 54 apart on the timetable, overnight
DL 2816 leaves 19 h 54 after CV 12 arrives on the timetable: more than half a day, so not a connection we count.