I suspect they fly the carnarsie RNP AR regardless of approval or not. I often hear other carriers requesting it with the caveat " visual" added.
CX are not allowed to select it from the data base, and with our diminishing hand flying skills and lower experience levels the bleeding obvious results.
If TG are in fact utilizing the approach without approval......it is probably a good thing for all in the air and on the ground......if you know what I mean!