> my money is on that joke being written by Pratchett, it fits his kind of satire so perfectly
Pretty sure it was written by Gaiman. I’m not finding the interview where he said this, but (if memory serves) Gaiman wrote that part of the story and had shelved it when Pratchett contacted him:
— Do you have plans for that thing you sent me?
— Not really, why?
— Because I know what happens next. So either sell me the rights to it or write it with me.
And then continued the interview with something like “and because I’m not an idiot, I didn’t pass up the opportunity to write something with him”.
Unless I misunderstand you I think you're talking about the story (or perhaps that chapter) as a whole, and I'm talking about one particular passage in that story
> I'm talking about one particular passage in that story
Gaiman’s initial draft may have included more by the time they had the conversation, but the moment I remember from the interview was specifically about that conversation amongst the demons. It stuck with me because I found the idea funny and it’s what made me want to take a look at Good Omens.
Now that you mention it, I do remember one author--pretty sure it was Gaiman re Good Omens--say that the parts you'd think were him were mostly the other author, and vice versa.
Pretty sure it was written by Gaiman. I’m not finding the interview where he said this, but (if memory serves) Gaiman wrote that part of the story and had shelved it when Pratchett contacted him:
— Do you have plans for that thing you sent me?
— Not really, why?
— Because I know what happens next. So either sell me the rights to it or write it with me.
And then continued the interview with something like “and because I’m not an idiot, I didn’t pass up the opportunity to write something with him”.