CZ 427 then AA 469 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
05:24CZ 427 from Anchorage at the gate
17:52AA 469 to Boston leaves the gate
12 h 28 apart on the timetable
AA 469 leaves 12 h 28 after CZ 427 arrives on the timetable: more than half a day, so not a connection we count.