When a question has a "comments-only" lock, the following notice is displayed on top of the question:
Locked for X days. Comments on this question have been disabled, but it is still accepting new answers and other interactions.
However, I noticed that if the question is closed (even before the lock), the same notice is used:
..which could be confusing, especially for new users.
Proposed change to the notice on closed questions:
Locked for X days. Comments on this question have been disabled, but it is still accepting [votes and] other interactions.
Or, as others have suggested, the additional "but it is still accepting [...]" part can simply be removed as it hardly provides any new information.