Originally Posted by
ograff
Would TWOV apply to YYZ-DTW-PVG-DTW-YYZ arriving in PVG 10/28 at 6:55 PM and leaving PVG 10/29 at 12:30PM? Some places I've looked say 24 hour TWOV does not require country C, but I can't tell for sure. If not, could I travel if I don't plan to leave PVG (ie just spend the night in the airport).
If TWOV would not apply to that could I just book a random (possibly refundable) ticket PVG-TYO or something for the morning of 10/29, and show DL that at check in even though DL knows I'm coming back with them on 10/29?
This is answered in the WIKI and many times above, on both points.
Relevant flights to the Chinese are the parts that touch China-- DTW-PVG-DTW. You won't even be allowed to board the plane to Shanghai since this does not meet the Country C requirement and thus requires a visa.
Do not attempt to try your subterfuge of booking another ticket like PVG-TYO as a ploy to allow you China-bound boarding in the USA, unless you fully intend to take it and abandon your original flight once you get to China. The Chinese will catch you at Immigration and will not be amused. Delta will likewise not be amused.
If you change your flights so the segments are YYZ-DTW-TYO-PVG-DTW-YYZ, then your journey becomes TYO-PVG-DTW and that is TWOV-eligible as long as the stop in PVG is within the 144 hours.