AA 4518 then K4 996 at O'Hare
Memphis → Chicago → Anchorage
Timetable, Chicago time
12:40AA 4518 from Memphis at the gate
03:45K4 996 to Anchorage leaves the gate
15 h 05 apart on the timetable, overnight
K4 996 leaves 15 h 05 after AA 4518 arrives on the timetable: more than half a day, so not a connection we count.