Thank you. You are right in that its a lot more miles to HKG than PEK. The CO flight arrives HKG at 18:45 and the little invetigation I have done indicates a that there is a DragonAir flight at 20:20.
Still, after 15+ hours in the air, spending a night in HKG would not be so bad and then We could take the Maglev into town, with a next day daylight arrival in PVG.