i was re-watching the final agni-kai between zuko and azula and i noticed something

throughout the entire match, zuko and azula are throwing straightforward, linear attacks at one another

and they deflect with the same kind of movement

but then when zuko does his firespin breakdance thing, its in no way linear, its completely circular

up until that point, theyd been doing classical firebending movements, but this one isnt really seen in firebending. but it IS seen in airbending

point is, zuko was learning from aang at the same time aang was learning from zuko