It took place on Kim's many-thousand acre estate...the one with a raging river, rapids, waterfalls and gigantic rock faces and fantastic views over...well, who can tell (don't forget this was a trial for survival on her land).
The mini-Amazon river where two couples fall in, get buffeted seemingly miles downstream, only to be conveniently still in their respective pairs...all the better to chat to each other.
And when the doctor and vicar finally haul themselves out, who's there to spy on them? Why murderous Meena, who must have run several miles overland to exactly the right spot at the right time, too.
The whole episode was absolute nonsense.