I didn't overthink it all. The thinking part was to try and figure out why anyone would say 9, which led me on a crusade of research. I still have found anything difinitive, especially when you think about like:

You have 6 apples. You divide them among 2 groups of kids, each group with 2 girls and one boy. how many do each get? It is the grouping of the parentheses, with distribution, and lack of ( ) around the 6 & 2. 2 groups of 2+1 kids are 6.

Also, isn't 2 of 2+1 = (2+1)+(2+1) ?

There are just so many "logical" ways of looking at, which is what math is supposed to represent

Cheers!