The other way arrow n, when the SO6P was alive their were no Uchiha, their were No Senju, they came long after His death when the descendants of the First and Second Son began calling themselves Uchiha and Senju. The SO6P was not an Uchiha and was not a Senju, He belong to a different Clan, what could that Clan be if not Uchiha nor Senju? Uzumaki is what the old and New Naruto transformation is calling out to the world. Naruto forms look totally different from all previous and present Host ask yourselves Why Bee and the rest do not look like Naruto? Why Bee and the rest look demonic in form and Naruto and Karuba now look more Angelic. Naruto must be a directed descendant of the SO6P compare to the rest. Ask your self What do you get when Uchiha and Senju DNA are combine? for it stops being Uchiha and Senju, it becomes something els it's now complete not separated. Could it be Uzumaki DNA? Could it be the SO6P was Uzumaki.