CV 209 then AA 2143 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
19:50CV 209 from Anchorage at the gate
08:06AA 2143 to Boston leaves the gate
12 h 16 apart on the timetable, overnight
AA 2143 leaves 12 h 16 after CV 209 arrives on the timetable: more than half a day, so not a connection we count.