Board Thread:Boruto Discussions/@comment-43689784-20200520151938/@comment-25122992-20200522190329

@UltimaDude, Momoshiki's ability to manifest his will through Boruto doesn't necessarily mean he can possess Boruto's body already. If we go by Amado's explanation, the proccess of Kama takeover takes a while, and although Boruto's progress was fastened by the resonance with Kawaki, it doesn't seem like Kama reached the state when Momoshiki can fully revive himself. Hence, it's more likely that Momoshiki can come out only for the short bursts of time. Since Kawaki had his Kama longer than Boruto, but manifested a horn only recently, Momoshiki's brief manifestation is already a wonder.