BR 608 then UA 2220 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
20:40BR 608 from Anchorage at the gate
12:11UA 2220 to Boston leaves the gate
15 h 31 apart on the timetable, overnight
UA 2220 leaves 15 h 31 after BR 608 arrives on the timetable: more than half a day, so not a connection we count.