Momo absorbed only a tiny amount of Hachibi's chakra. Killer B used the classic tentacle switch trick and should be alive and kicking (according the movie at least…). Anyhow, Momo said "Tsk! Is this all?" when he turned the chakra he had absorbed from Killer B into three chakra pills. He used at least one chakra pill at the stadium assault and the remainder they used to plant a new tree in his dimension apparently. This does explain what took them so long to reach Konoha lol. However this doesn't explain why they chose to prioritise planting a Shinju over stealing Naruto's chakra. Shouldn't he require at least a fragment of all tailed beasts' chakra? Obito needed all nine's chakra in order to revive the Juubi. What's the point of planting a Shinju on an already barren world? Discuss.