I had understood - or perhaps misunderstood - from @stephenjw 's post in the linked thread that he creates a series of individual markdown notes with titles such as 10-03-2023 - The victim met the defendant behind the football ground.
The only way I have been able to sort notes like that chronologically is to write the date in ISO format : 2023-03-10 etc.
That is fine for me but often just confuses people I need to share the chronological list with