We will be doing an Antarctica cruise from Ushuaia in January 2023 and will need to get from SYD to EZE, then EZE-ZRH, then ZRH-SYD in J. At the moment the best way I can see to get from SYD to EZE will be to book SYD-LHR then LHR-EZE, even though it is a long way around to get there at least it will be in J.
SYD-HKG, HKG-LHR and v.v. are generally flights I think CX will still put on even in the worse of times - it was part of the final four (SYD, LHR, LAX and YVR, even if YVR subsequently got the axe) in the second quarter of 2020 when the international network almost basically shut down.
Why ZRH though? That one is far more a crapshoot.
I never seem to see award availability on QF to fly SYD-SCL as a Bronze QFF.
My wife and I flew SCL-SYD on QF J in their 747-400ERs in May 2019
https://www.flyertalk.com/forum/cath...l#post31140358 as part of our AM oneworld multi-city redemptions.