The relationship between Kryptonians and Amazons typically involved the Supermen and Wonder Women. However, it was their less notable family who we spotlight today. Specifically, from Earth-One we have Supergirl and Nubia, and from Earth-Two we have Power Girl and Fury.
We have but one encounter between Kara and Nubia, when the former is summonded to Paradise Island and made an honorary Amazon, which coincides with their need to send the Girl of Steel to obtain a rare root that will cure Nubia from a mutated shark bite. Don't ask.
Their counterparts had a more momentus meeting, working side-by-side alongside their Infinity Inc. teammates in defeating the man-monster Solomon Grundy, with Kara imparting knowledge to Lyta who just started her superheroine career as Fury. They'd then part a friends.