[quote=@MissCapnCrunch]
[i]So people that are sons and daughters of the same person-
Does that mean they are siblings in a sense? Does that mean they know about one another?[/i]
[/quote]

I do believe so, yes. That would definitely mean that they are the rare cases of being full-blooded siblings who also happen to be demigods/demigoddesses. Why? What piqued this particular question?

[quote=@Wade Wilson]
<Snipped quote by Altered Tundra>

Di-no-saur-i-us

Got it :D
[/quote]

I can't help but feel you're yanking my chain. XD