But governments exchange documentation and information with each other all the time. So if a person is applying under the Access to Information Act to receive government information, they must apply to the government institution that holds that information, not one that has it under escrow, or one that has borrowed it for the purpose of an application and will send it back thereafter.
So if an individual wants to apply for access to a document held by CBC, he will have to apply to CBC. If the CRTC has temporary control of a document that CBC provided them, they will have to turn those documents back to CBC and have CBC determine whether or not they can be released pursuant to the rules specific to CBC, which is the prejudice test I've created.