CA 3103 then UA 1239 at O'Hare
Anchorage → Chicago → Rochester (ROC)
Timetable, Chicago time
15:07CA 3103 from Anchorage at the gate
13:57UA 1239 to Rochester (ROC) leaves the gate
22 h 50 apart on the timetable, overnight
UA 1239 leaves 22 h 50 after CA 3103 arrives on the timetable: more than half a day, so not a connection we count.