[quote name='Matt Young']That and everything else I have ever read, while stating that the 2 games share the same developer, have never claimed any connection between the 2, or that SOTC was a sequel to Ico.[/quote]
You didn't read the entire article, then. There's a section titled "Connections to Ico"
"
Shadow of the Colossus is considered both a
spiritual successor[31] and prequel to
Ico.
[4] For several months during and after the game's release, the game's director and lead designer,
Fumito Ueda, maintained that the game's status as a prequel was simply his personal take on the game and not necessarily its
canon nature, as he largely intended for players to decide the specifics of the story for themselves. However, during an interview in March 2006, Ueda revealed that a specific connection between the two games exists: the world featured in the two is the same, with
Shadow of the Colossus taking place at an unspecified time before
Ico. He revealed that Wander sires the line of horned boys of which
Ico's protagonist is a descendant.
[5] Moreover, the shadowy figures which appear in the Shrine of Worship are connected to the shadows which the player must fight in
Ico.
[21] Both games use unique
fictional languages as well."