UA 1851 then CA 8414 at O'Hare
Fort Lauderdale → Chicago → Shanghai
Timetable, Chicago time
16:52UA 1851 from Fort Lauderdale at the gate
05:40CA 8414 to Shanghai leaves the gate
12 h 48 apart on the timetable, overnight
CA 8414 leaves 12 h 48 after UA 1851 arrives on the timetable: more than half a day, so not a connection we count.