The whole entire point is that Aqulio is not in the same system as Nauvis. If Aqulio was in Nauvis it would like of defeat the main purpose of the mod; especially if intersystem travel was locked behind Aqulio. Even more planets would need to be pulled back into Nauvis. I can change the routes to use the same asteroids as Gleba to Aquilo. I have not actually done the solar system edge yet, so I did not realize it was different, sorry.
Tenebris is also one of the few modded sciences I had not done yet so I completely missed it needed Cryoscience. I actually originally wanted in the same system as Aqulio being a "dark" planet and Jarbid being the "fringe" system, but I was just going based on the tier list from Organized Solar System which puts it before Aquilo.