Could a short duration KOR leg have happened on the Tanzania mainland either before or after the known Zanzibar leg? And wouldn't that keep filming pace on schedule?
And unless there was definite info on the destination of flights out of Sao Paulo there remains a possibility teams flew elsewhere in Brazil other than Rio; I don't recall seeing anything in the live sightings that definitively closed the door on that possibility.
As much as would be fun to have another leg in Brazil, 2 legs in Africa do seem more likely considering those couple days we lost them after leg 3 started on the 14th. My reasoning is: 1) there's not enough time to fly out to anywhere in Brazil remote enough (emphasis on remote enough) to get us no sightings between 06/14~15 and 2) not many flights out to Tanzania, as the production, Phil and teams would just have to get back to Sao Paulo again anyway, and the lack of flights does make the coordinating Phil arriving before teams harder.
Spec:
leg 3 - Sao Paulo, Brazil - Tanzania / Africa 1 - 06/14~15
leg 4 - Zanzibar, Tanzania - 06/16-17
leg 5 - Zanibar, Tanzania - Ålesund, Norway - 06/18-19
leg 6 - Ålesund, Norway - Lake Como, Italy - 06/20-21