"The Venture Bros. was to originally take place in the same universe as Johnny Quest, but Hanna-Barbera objected after the first season. "
— Are you sure about that? I read that Cartoon Network Studios originally WAS Hanna-Barbera, and so had the legal rights to the characters. It's true that they did dial back the connection to the Jonny Quest characters, but I don't know why.
"The Venture Bros. was to originally take place in the same universe as Johnny Quest, but Hanna-Barbera objected after the first season. " — Are you sure about that? I read that Cartoon Network Studios originally WAS Hanna-Barbera, and so had the legal rights to the characters. It's true that they did dial back the connection to the Jonny Quest characters, but I don't know why.