11.28.3 Can you answer these questions?

11.28.3.1 Why does this siunitx-datatool combination not work on Overleaf?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=741674

%%%%%%%%%%%%%%%%%%%%% 
\cprotect\subsubsection{\verb|The following code|} 
\url{from this answer:https://tex.stackexchange.com/a/741657/39314} 
 
\begin{TEXTWinline} 
[packages] [overleaf] [siunitx]
 

asked by FooBar https://tex.stackexchange.com/landing/r/digest?cta=user&id=39314 Score of 1

11.28.3.2 Modify authoryear biblatex style

https://tex.stackexchange.com/landing/r/digest?cta=question&id=741684

I am looking to make a custom bibliography style using biblatex. My current setup is: 
\documentclass[letterpaper,12pt]{article} 
\usepackage[style=authoryear, backend=biber, maxbibnames=4, uniquename=... 
[biblatex] [bibliographies] [cv]
 

asked by isaacsmith0427 https://tex.stackexchange.com/landing/r/digest?cta=user&id=391562 Score of 2

11.28.3.3 How to force reference to be comma separated

https://tex.stackexchange.com/landing/r/digest?cta=question&id=741664

When I write multiple authors, the last author will be written with ", and" instead of just comma. For example, in my bib file 
author = "A, B and C, D and E, F" 
my compiled ... 
[bibliographies] [bibtex]
 

asked by Luke https://tex.stackexchange.com/landing/r/digest?cta=user&id=391454 Score of 1