AA 457 then K4 996 at O'Hare
Washington National → Chicago → Anchorage
Timetable, Chicago time
14:15AA 457 from Washington National at the gate
03:45K4 996 to Anchorage leaves the gate
13 h 30 apart on the timetable, overnight
K4 996 leaves 13 h 30 after AA 457 arrives on the timetable: more than half a day, so not a connection we count.