BR 646 then UA 350 at O'Hare
Anchorage → Chicago → Philadelphia
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
12:03UA 350 to Philadelphia leaves the gate
18 h 53 apart on the timetable, overnight
UA 350 leaves 18 h 53 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.