K4 221 then AA 2074 at O'Hare
Anchorage → Chicago → Boston
Timetable, Chicago time
13:41K4 221 from Anchorage at the gate
13:37AA 2074 to Boston leaves the gate
23 h 56 apart on the timetable, overnight
AA 2074 leaves 23 h 56 after K4 221 arrives on the timetable: more than half a day, so not a connection we count.