Of course, it was also possible that civilizations at the forefront of The Great Voyage Road would head directly toward the Boötes Void, but civilizations in the galaxies farther behind would most likely pass through the Milky Way Galaxy or the Andromeda Galaxy.
Not to mention the Milky Way Galaxy's two Satellite Galaxies, the Large and Small Magellanic Clouds. Any civilization born there would definitely head to the Milky Way Galaxy first. Likewise, civilizations born in several Satellite Galaxies of the Andromeda Galaxy would also choose to head for the Andromeda Galaxy first.
There were many such galaxies. Those named by humanity included M32, M110, NGC185, and NGC205. Though these galaxies were only 1,500 to 3,000 light-years in diameter, the possibility of them producing Level Six Civilizations could not be ruled out.
It was just unknown whether civilizations born in other Star Systems had already arrived in the Andromeda Galaxy.
In any case, the Andromeda Galaxy definitely contained many Unknown Civilizations. They might possess some kind of Characteristic Technology, or they might be ordinary Level Six Civilizations. They were potential dangers, but they could also be potential partners.
For the Level Six Civilizations of The Great Voyage Organization, this was certainly not the time to broadcast everywhere in search of them. They all knew what had happened when civilizations from other Star Systems arrived in the Milky Way Galaxy. Those civilizations had carried out unrestricted broadcasts after arriving, hoping to directly recruit the Milky Way Galaxy's civilizations to join them on The Great Voyage, only to be completely wiped out by the Harvesters.
A lesson from the past.
From this perspective, perhaps being born in the Milky Way Galaxy was a kind of blessing. At the very least, they had broader knowledge in this regard than civilizations from other Dwarf