User blog comment:BannedLagiacrus/Monster Appreciation Week: Dreadqueen Rathian/@comment-26421638-20161014092313/@comment-27125903-20161014211656

@Drake 512   True... I guess they just wanted make a re-live if the 1st gen days on the troublesome pair quest.

But I guess Capcom weren't intending to allow you to fight 2 different deviants at once which could be the reason why.