CZ 435 then AA 2950 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
15:58CZ 435 from Anchorage at the gate
06:00AA 2950 to Boston leaves the gate
14 h 02 apart on the timetable, overnight
AA 2950 leaves 14 h 02 after CZ 435 arrives on the timetable: more than half a day, so not a connection we count.