BA 297 then CX 81 at O'Hare
London → Chicago → Anchorage
Timetable, Chicago time
18:45BA 297 from London at the gate
15:30CX 81 to Anchorage leaves the gate
20 h 45 apart on the timetable, overnight
CX 81 leaves 20 h 45 after BA 297 arrives on the timetable: more than half a day, so not a connection we count.