Well, Manga Rock was often associated with copyright infringement. Whether it had the legitimate right to offer Spy x Family manga is a big no.
I'm not sure there's a direct connection. Manga Rock is a platform, but not all mangas on it are officially licensed. Spy Family manga may or may not be available there legally.
Generally speaking, the adaptation in Manga Rock of Spy Family is decent. It retains the key characters and storylines, but there might be some minor differences for artistic or presentation reasons.
I'm not sure there's a direct relationship. Manga Rock is a platform for accessing manga, but it's not specifically tied to family.
The connection is rather limited. Manga Rock was known for offering unauthorized access to various manga, including Spy x Family. This is against the law and harms the creators.
Loid Forger is a spy himself in the Spy x Family manga. He takes on various missions and disguises to fulfill his spy duties.
Honestly, I don't think there's a known significant relationship. Maybe it's just a random mention or a fan's speculation, but no established link as far as I know.
Sueisha is the publisher of the 'Spy x Family' manga. They handle its production and distribution.
In the Spy x Family manga, Yor is part of the family dynamic. Her skills and personality contribute to the unique and comical situations the family finds itself in. Her background and interactions with other characters add depth to the story.
I'm not sure there's a direct relationship. Maybe you mean something specific, but I haven't come across any obvious connection.
Honestly, I have no idea. There doesn't seem to be an obvious connection between the 'Spy x Family' manga and owls. Maybe it's a very specific reference in a certain fan community that I'm not familiar with.