CV 12 then UA 2220 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
19:11CV 12 from Anchorage at the gate
12:11UA 2220 to Boston leaves the gate
17 h apart on the timetable, overnight
UA 2220 leaves 17 h after CV 12 arrives on the timetable: more than half a day, so not a connection we count.