Natural draining - every time wind main chases, she increases her nin by that percentage and regains 15 chakra(unless chakra blocking barrier is active or your chakra is at 100 already). Scalling works regardless of chakra issue, unless your main was hit with enfeeble debuff. On top of that, main gets a senjutsu tag when this talent is selected.

Chakra coordination - every time unit recovers chakra (no matter the ammount of chakra recovered) it gets healed by x% of that unit's max hp. Character doesn't heal when: has full hp/ chakra is at 100(max). Chakra needs to be physically added on your bar, if you steal chakra from the enemy (eg. kisame) or generate it yourself (eg. natural draining talent) but chakra blocking barrier is active, you dont get a heal.