I arrive to HKG on AC (J) at 5:30pm and connecting on UL (J) at 6:20pm on a separate PNR. I'll have carryon only. Questions:

1) is the above a legal MCT?
2) do I have to go to any transfer desks to pickup my UL J BP or show up at the gate?
3) How far apart are AC 007 arr and UL 423 dep gates from each other? Is it 10 min or more?

TIA for your help.