CLS & the Queen Amidala Proving Grounds Tier? | Big Fish Buff is Key to Victory!

I had a comment saying that a standard CLS squad can complete the Queen Amidala tier of the proving grounds event. The key is to make sure that the "Big Fish" buff is on your side, most preferably on Chewie or 3PO & Chewie.

As such, here I am trying it out. Do O fond success? Is this easy to achieve??