User blog comment:SayuriDarling/The Trials of Apollo Official Discussion/@comment-27091614-20151114205002/@comment-25155763-20151202215827

What do you mean by longer? Greeks had the gods first, and Oracles too. Romans don't even have proper prophecies, they just cut animals and ask questions, so you have to have about A million billion million augurs to get a prophecy as detailed (yet vague) as an oracles. Unless you count the Sybyline Books, in which case yes they did know before, but it wouldn't matter. Mortals(demigod or not(Greek or Roman)) cannot and do not interfere in godly affairs such as this, especially not with the Beloved King of Olympus.

So no, they couldn't do anything.