Chapter 4 boss room (semi-spoilers)

[Mogul]

So there's an entire wall that seems breakable in the room next to the eletric pads and i was wondering if I missed something during the fight.

What I basically want to know is if the only way to get through that wall is the boss attacking it( if possible? I mean, it showed up destroying a similar wall) or if I just need to progress the story a bit more and I'll be able to destroy it(with a stronger clione perhaps?)

If anyone knows the answer there's no need to tell me which Clione or when it appears, I just want to know if I have encountered a permanent missable (I mean, you know, since the boss is dead).

Thanks!

[Grimalkin]

I was able to get the first boss to respawn when I was in stage 3, revisit the room after some time has passed

[Sakura Hana]

Boss can break it and so can Heat clione/weapons