Yes! Great questions!

I did use guard #3 @ 1:40

And I used guard #2 open teeth @ 5:00 .

To be more specific,

I used #3 closed all around, then #1 closed on edges , after that I used #2 closed in the middle.

After that is blending using #2 open first , then use #1 open around the bottom

Hope this makes more sense now :)