CX 80 then UA 2304 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
19:15CX 80 from Anchorage at the gate
15:44UA 2304 to Boston leaves the gate
20 h 29 apart on the timetable, overnight
UA 2304 leaves 20 h 29 after CX 80 arrives on the timetable: more than half a day, so not a connection we count.