There were even clashes between the Henali and Fuegan themselves, though most of those took place outside the Origin realm so no one actually knew the details. The few battles that were fought in the Origin realm were fought in the Void behind space, to prevent the realm itself from being destroyed.
The many Dao Lords who had entered the realm all became neutral parties, unwilling to take part in such a conflict. It was fine while it was just their subordinate forces fighting, but they themselves were not going to expose themselves to war. But under the guise of neutrality, they too began to plunder the Origin realm.