AA 597 then CX 99 at O'Hare
San Francisco → Chicago → Anchorage
Timetable, Chicago time
23:55AA 597 from San Francisco at the gate
19:15CX 99 to Anchorage leaves the gate
19 h 20 apart on the timetable, overnight
CX 99 leaves 19 h 20 after AA 597 arrives on the timetable: more than half a day, so not a connection we count.