CI 5226 then UA 4177 at O'Hare
Anchorage → Chicago → Buffalo
Timetable, Chicago time
11:55CI 5226 from Anchorage at the gate
06:50UA 4177 to Buffalo leaves the gate
18 h 55 apart on the timetable, overnight
UA 4177 leaves 18 h 55 after CI 5226 arrives on the timetable: more than half a day, so not a connection we count.