In fact, the communication system wasn't supposed to get this far into the Realm of Gods' Territory. This Continent held little importance on the grand scale of things, with very few experts that could be of any meaningful contribution to the war.
However, the sudden emergence of the Leviathans, despite their relatively weak combat abilities, brought a new dynamic to the conflict. These beings, with their remarkably high cultivation realms and a significant number of Peak Stage Divinity Realm members, owed their strength to a bloodline connection with the Dimensional Realm Core, where the Universe Foundation Fragment existed.
Such a fighting force couldn't be ignored, so one of the conditions for the Leviathans to participate in the war was to have the communication system reach their sacred land at any cost. The Realm of Gods' experts obviously accepted, and so Havek arrived here with the communication system.