Some connections...
So I was thinking some lf the nihei works are connected without disturbing or breaking their on canon
Biomega is a lone verse but why!?.
Mostly cause It doesn't fit in any of the other verses besides abara (Which could fit in any othe verse) I explain later
Sidonia and Blame also shown to be impossible since they also show the earth being destroyed or doomed
Blame! And Noise
Also is lonely verse only being related to noise it's precuel
Then the connection I mentioned is Sidonia, ABARA and Aposimz
So Sidonia has a reference to aposimz whre they mentioned to be the last communication they had with other ship
Which leave to think humans arrived into multiple solar systems ("abara ship world" and Aposimz) they later forgot about the gaunas with only the 4th Chronicle group remembered it, they created the black gaunas to figth the white gaunas which maybe a variation of the regular guanas that appears in Sidonia way smaller and weak but also much faster 400 years happen while the Sidonia was traveling and fighting guanas the diginmortal plot happen then the abara plot in the end of abara nayuta and denji are send to a "world" where another black guanas lived that end up being a planet developing advance technology to enhanced to black gaunas creating regular frames centuries after Denji and nayuta descendants maybe for respect or tradition sre called the same wich would explain why nayuta and denji are brothers they are not teh original but had the same powers despite not looking alike in human form also that explains why they are so strong since nayuta easily beats etherow despite him being really OP for the average Frame
There are some plot hole here and there but IDK this is just a theory any thoughts???