AA 1872 then CX 99 at O'Hare
Seattle (SEA) → Chicago → Anchorage
Timetable, Chicago time
12:26AA 1872 from Seattle (SEA) at the gate
04:30CX 99 to Anchorage leaves the gate
16 h 04 apart on the timetable, overnight
CX 99 leaves 16 h 04 after AA 1872 arrives on the timetable: more than half a day, so not a connection we count.