CM 228 then CZ 438 at O'Hare
Tocumen → Chicago → Shanghai
Timetable, Chicago time
12:46CM 228 from Tocumen at the gate
01:45CZ 438 to Shanghai leaves the gate
12 h 59 apart on the timetable, overnight
CZ 438 leaves 12 h 59 after CM 228 arrives on the timetable: more than half a day, so not a connection we count.