Question: are all the tailed beasts inside naruto?
Answer: Naruto didn't always have that title, he was originally the jinchuriki of kurama(nine tails) alone until the 4th great shinobi war were he bonded and linked his chakra with all tailed beasts before and after freeing them from the gedo statue. but the bonding was complete when he had hagoromo's chakra planted into him.