AA 4649 then K4 996 at O'Hare
Pittsburgh → Chicago → Anchorage
Timetable, Chicago time
10:55AA 4649 from Pittsburgh at the gate
03:45K4 996 to Anchorage leaves the gate
16 h 50 apart on the timetable, overnight
K4 996 leaves 16 h 50 after AA 4649 arrives on the timetable: more than half a day, so not a connection we count.