Momo stoping Ohigashima might be the reflection of the Fishman Island arc when Shirahoshi (Poseidon) can command the sea kings to stop Noah.
Mono definitely can command, something big like Zou arc. He can command Zunesha.
Plus, it is still unclear how he can see Luffy fighting Kaido when he...
My guess is anyone apart from Toki can be push to the future but he/she will eventually be pull back to the original time. This is of couese except Toki herself. So that 9SB and Oden included in this case. This is explained why Oden look young and happy.
present --> next 20 years --> back to...
