I have an OracleAQ multiconsumer queue owned by schema A. As explained in the Oracle doc, there are some views (schema.aq$table_name*) to check the status of the queue table.
I can query these views from another schema through plain SQL or PL/SQL code, but not if this code is wrapped inside a package. The package body refuses to compile with a ORA-00942: table or view does not exist
The second schema has all the necessary rights since I can actually query the view from outside the package.
I performed the following successfully:
Not sure (without seeing your Schema information) whether there is another priv higher in priority that is restricting your AQ View from being read. This stackoverflow post shows some information on "displaying" a user's privs.