Sim , ele estava tentando parecer alguém da Rodésia .
De IMDb :
It is a Rhodesian accent, or Southern African.
It is different to the South African accent, like the New Zealand and Australian accents are different.Rhodesia, now known as Zimbabwe, has a small white population who have their own accent, which is often confused with the white South African accent.
Em próprias palavras de Leonardo DiCaprio > :
[I spent] a lot of time with the locals, drinking beers with them, hearing a lot of their stories. [I spoke with] a lot of guys from the South African military.
And of course I have an accent coach and he was there guiding me through it. But we had conversations with these people, listened to their stories, made them say sentences over and over again.
Ele também fala brevemente sobre isso nesta entrevista em vídeo .