I believe there are questions relating to her doing the whole route or just selected stretches for the cameras?
Filming is time consuming and expensive, why would they let her walk it all if they were not going to use the footage?
As for John Noakes I wasn't doubting his commitment it was just the way the programmes were presented as if it was all spontaneous.
'Oh Shep what is that strange noise. No, wait, come back Shep. It's a man playing the bagpipes, hello can you tell us about the bagpipes?'
That is fine for kids but not when JB almost does the same thing on an adult programme.