Bending after the era of raava
Sorry about the title, I'm not sure how to title this, but how did air benders learn from bison, fire benders from dragons and so on, if they received bending from lion turtles? There had to already be benders after the lion turtles stopped caring for humans, because many fire benders left their lion turtle cities with the element before the harmonic convergence and I'm sure other people did that on other cities too, so what do you think about that?