Ah, yes they can definitely bond over Katara leaving. </3 Which reminds me of my little dilemma over does Winry even know about it, yet. Most likely yes if she tried to call her and got the usual ID error message / whatever we call it. Anyway, Winry kind of likes to get to know people from Katara's world, and might consider them as potential friends right from the start, so~ you've been warned, Korra. :D