It did give us a small portion of the backstory to all this, answered a lot of questions but as kishi constantly does he leaves us with a million different questions after the million he just answered.
Its great to see thay kaguya actually has emotions too aha. Also get a face to hamura and confimation that he has bakugan.
Naruto and sasuke probably had a lot of chakra drained and i dont see this next jutsu of theirs totally finishing kaguya off.
Probs another power up coming either from hamura or a combo of their yin and yang powers