A week ago I did Han-Hkg-sfo
i had no luggage only carry-on
A few things
1- I arrived from Bkk 6 hours before flight ,didn't want to take chances ,even though there were a few flights that were better .
I paid 6$ for l the visa letter but didn't need it .
when arriving in Han ,I went straight to the transfer desk ,and they transferred me .
lounge in Han ,told me aloud only 3 hours but after talking to them they let me stay much longer.
the flight from Han was delayed more then 1 hour ,so I had only about 20 minutes in the lounge in HKG.
the flight was great .
I booked the flight through cx website and put my AA advantage .hopefully soon I will get my miles credited .