User blog comment:Kogath/Monster Hunter X Discussion/@comment-25275196-20150719041233/@comment-28303251-20150720021939

Kinda been waiting for this, closest we got to this was Rathian and Rathalos...and all they do is enter the area where the other is in danger. That and the Seltas duo and a few Frontier monsters. But yeah, most of them just act like the other doesn't exist.