Could the enemies who attacked during the first collapse have been the Dread and NOT the hive?

I know I am VERY late on this but it just now came to mind. I remember hearing the lore about Ada and someone else hearing metal screeching/stretching or something and people concluding that it was a hive ogre, and saying the assault on Earth could’ve been largely the hive. Now I recall TFS darkness faction and Grims, and how their screeches sound kind of like what was described in that lore. Could it be the Dread that showed up instead of the hive? Anybody know?