@HatStickBoots, if you compare the beginnings of TSP and Walking Away, other than the placenames matching, it's hard to believe they're walking the same path.
I know there are obvious practical differences between a book about
(1) a walk where the walker sleeps under cover at a pre-arranged spot every night, gives a reading every night, is generating income via readings, and is often walking with a random collection of friends and strangers, adequately nourished, and carrying only a day pack
and
(2) a walk involving two homeless people wild-camping, carrying everything they need, on little money and busily hating everyone else. (And, if one is to believe SW, this is a walk done in desperation with no intention of writing about it, whereas SA is taking voicenotes en route and writing them up every night, for a known, presumably commissioned, book project.)
But the first stages of both walks couldn't be more different, as written up.
There's a few beats in common (steep climbs, goats, rhododendrons), but otherwise they're worlds apart, and weirdly, given the way both books are marketed, SA is far more attentive to nature. He's always noting bird species, exactly what trees/vegetation/landscape he's walking through, the names of islands and rocks offshore, the exact colour of the bedrock/shingle. SW emotes a lot about wildness and nature, but is far less detailed in her attention to it.
Plus virtually all of the Walkers' encounters with people are negative. Dopey, loud Americans with a 'schedule'. Families grabbing their children away from the 'homeless' people. Aggressively unpleasant dog owners with badly-behaved dogs. SA meets a lot of people, for much longer periods (he's staying in their houses, or walking for hours with them), some of whom are eccentric or plain odd, but they're not all awful.
(Also, SA was, I think 52 when he walked the north part of the SWCP, but he doesn't appear to keep encountering passersby telling him how old he is...?)
I did come across one moment in Walking Away which might have inspired the long-running SA gag in TSP. At Combe Martin, a 'scouting party' are awaiting SA, to show him to where he's staying. They’ve already approached seven or eight ‘possibles’, but it’s the hat that persuades them I might be the poet they’re looking for.
I suppose it's possible TW was one of those possibles?