CA 1011 then UA 4177 at O'Hare
Anchorage → Chicago → Buffalo
Timetable, Chicago time
17:12CA 1011 from Anchorage at the gate
06:29UA 4177 to Buffalo leaves the gate
13 h 17 apart on the timetable, overnight
UA 4177 leaves 13 h 17 after CA 1011 arrives on the timetable: more than half a day, so not a connection we count.