There is an Insider vid saying that teams travelled for 4 days getting to Botswana.
Peach, thanks for directing me to the Insider video with Katie stating "it took us 4 days and 6 flights to get to Maun." I say that's rubbish, as that would be highly unlikely from what we know about flights! The Amazing Line for flights on last night's telecast showed HAN to HKG to JNB. With the actual flight information for the relevant dates and those routes I cited above, here is what I believe happened:
Nov. 23 (although everything could be moved one day if there was some extended pit stop we do not know about and cannot take into account - HAN HKG
Nov. 23 - departure HKG (same comment)
Nov. 24 - arrival JNB and transfer JNB MUB arriving early afternoon (same comment); there was obviously an overnight in Maun although I would have flown them out to the Makgadikgali Pans and made them sleep on cots!
Nov. 25 - final flight MUB to Xhumaga airstrip departing between 9am and 930am
That's exactly 4 flights, with it very unlikely that any alternate routes from HKG to JNB were used. It happened in total elapsed time of an apparent 47 hours plus the time zone difference of 5 hours between HKG and MUB, for a real total of approximately 52 hours in route. That's not 4 days no matter how you look at it.
Perhaps Katie was adding in the overnight hours in Hanoi, but that still would not get it to more than 63 hours (2.7 days).