AC 1048 then UA 5191 at O'Hare
Vancouver → Chicago → Lancaster
Timetable, Chicago time
14:37AC 1048 from Vancouver at the gate
08:50UA 5191 to Lancaster leaves the gate
18 h 13 apart on the timetable, overnight
UA 5191 leaves 18 h 13 after AC 1048 arrives on the timetable: more than half a day, so not a connection we count.