Re : Green & Red zoning of the airport & essentially the country one travels from - I have got a few questions.
1. Does it mean that we can no longer take a "scenic" route on international trips ? Imagine transiting via a few countries (edit : solely for the purposes of earning SCs and making the best use of DSCs, should they EVER come up again) before reaching your destination, or before arriving into AU.
2. What happens if you are on a scenic route (say, MAA-DEL-CMB-SIN-BNE-MEL-OOL-CBR) and there happens to be a spike in CMB or even domestic (BNE/OOL/MEL) on the day you are transiting. Does it mean you get on to the "red" list?
3. How will AU airports determine if the "green" & "red" pax have not had a chance to mingle in any one of the transit airports?