Per
Oneworld Explorer rules you can't do xxx-Europe-South Africa-Europe-xxx.
Originally Posted by xONEx rules
3. Special provisions for travel which includes Africa:
For travel originating other than in Africa
One of the following backtracks is permitted:
3.1.1
>Europe-Africa-Europe>
One of the visits to Europe must be a
transfer without stopover between Africa
and the previous/next continent.
Travel may not include Mauritius/South Africa
3.1.2
>Middle East-Africa-Middle East>
One of the visits to Middle East must be a
transfer without stopover between Africa
and the previous/next continent.
3.1.3
>Europe-Africa-Middle East>
or
>Middle East-Africa-Europe>
Travel may not include any flown or surface sector
Between Europe and Middle East
Yes CX still has F on YVR-JFK vv.
I don't think JNB-HKG still has F?
SYD-NRT does not have F.
Most intra-Asian flights do not have F.