UA 1811 then CA 1016 at O'Hare
Philadelphia → Chicago → Shanghai
Timetable, Chicago time
11:20UA 1811 from Philadelphia at the gate
23:30CA 1016 to Shanghai leaves the gate
12 h 10 apart on the timetable
CA 1016 leaves 12 h 10 after UA 1811 arrives on the timetable: more than half a day, so not a connection we count.