Don't know if that's relevant enough to be added here but I found a small typo in the user manual that is provided on CTAN: https://ctan.org/pkg/siunitx.
Version v3.3.9, last revised 2023-11-14.
On page 7 at "\qtyproduct" it states:
Runs of products of of numbers
One "of" is too much.
Sorry if that doesn't belong here - just wanted to help.
Don't know if that's relevant enough to be added here but I found a small typo in the user manual that is provided on CTAN: https://ctan.org/pkg/siunitx. Version v3.3.9, last revised 2023-11-14.
On page 7 at "\qtyproduct" it states:
One "of" is too much. Sorry if that doesn't belong here - just wanted to help.