I can't see how it does to be honest.
In the first example, there's the idea of 'setting things to right' (that's why we have the idea of 'putting the world in [its rightful] place' - and then all will be well.) Similarly, if you can 'hold the end of reason with someone' you can both have a 'civilised' (i.e. rational/reasonable) conversation between you without coming to blows and/or insulting each other.
If you have this 'fine-grained talking' (perhaps, that's a better, literal translation), then you're not really discussing 'big' issues, rather, you are having discussions of a nature which are like small pieces of coal (an apt simile, you'll have to admit from a Welsh guy - although we have no coal mines left!). But, please don't misunderstand me, such conversations are not trivial, nor do they necessarily discuss trivial matters. Rather, they are the exchange of pleasantaries which invariably lead on in Welsh to things like,
A: 'Where do you come from?'
B: 'Really? Well, well! My second cousin once removed's husband lived two doors down from there in the 1930's!'
A: 'Now, isn't that amazing! He must have been a regular customer at my grandfather's shop in X street. Jones and Sons.'
B: 'Good heavens! So, he was. That's where he bought his tobacco, every Thursday, like! He was known as 'Bob the Baco'.
A: 'Bob the Baco! Yes, indeed, I remember my grandfather telling me about him! Small guy with a glass eye!'
B: 'That's 'im!
A: 'Well, well. Small world, isn't it?
[Continued on p.92]
