Hi all, just wondering if the above advice is still current.

I have a morning flight HKG-PVG, few hours in PVG (enough time to go landside for sure) and same day night flight booked from PVG-HKG. Both on separate PNR and both are KA.

If I check in at Airport Express in HKG in the morning, will they be able to issue BP for both flights? If it makes a difference I have no check in baggage either way.

Also in theory, if I did have both BP, would I be able to do an airside turnaround upon arrival by going through transit security and back again to HKG? I don't actually want to do this, but just wondering if it's possible in theory.