Can you play a Stowaway card on a treasure that is protected by a First Mate? The First Mate specifically says that it protects from being destroyed or stolen. The stowaway is doing neither. It is simply negating
How about one that is protected by the Pirate Code? It is less specific in that it just says the card is protected. Does not specifically say protected from being stolen or discarded.
You may play a Stowaway in both those cases! Protected always means against being stolen or discarded.