Might be Hanoi/or Botswana were one leg
I do believe there are 2 legs in Botswana, or they went to Zambia/Namibia after that. So, these might be my speculations for the TAR 22 legs:
Leg 1: Los Angeles to Tahiti
Leg 2: Tahiti to Bora Bora
Leg 3: Bora Bora to Queenstown, New Zealand
Leg 4: Queenstown, New Zealand to Bali, Indonesia
Leg 5: Bali, Indonesia to Hanoi, Vietnam
Leg 6: Hanoi, Vietnam to Botswana
Leg 7: Botswana/Namibia/Zambia
Leg 8: Botswana/Namibia/Zambia to Jungfrau, Switzerland
Leg 9: Jungfrau, Switzerland to Berlin, Germany
Leg 10: Berlin, Germany to Edinburgh, Scotland
Leg 11: Edinburgh, Scotland to Belfast, NI
Leg 12: Belfast, NI to Boston or Washington DC
And sadly there's no new country that'll visit for TAR 22, and even my country, Philippines didn't visit as well just like the previous season. And that's sucks!!!