Qantas checking luggage through on 2 seperate PNR’s

[Goaty]

Hi All
I have a Qantas flight Syd-HK then a seperate ticket with Cathay heading to Rome.. 7 hrs layover.. Will Qantas at Sydney airport check luggage through if I ask and show the flight details..? With the amount of time I of course can pick up luggage in HK but will have to wait at least 3 hours for CA check in.. Or put them in storage and not lug them around.. If Qantas checks them in I can go straight to the Pier or Wing Lounge .. Thoughts Guys.?
Sorry if answered a million times but I did try and look and the answer seems to be it’s at the discretion of the checkin person at Sydney..

 

[SeatBackForward]

Seperate PNRs means no interline.

https://agencyconnect.qantas.com/en-au/policies/baggage-information/interline-and-through-checked-baggage

 

[Goaty]

Seperate PNRs means no interline.

https://agencyconnect.qantas.com/en-au/policies/baggage-information/interline-and-through-checked-baggage

Thanks SBF.. Mine is an award with Qantas and a paid with Cathay both in J so it could be possible ??