Something I've noticed on a lot of SE sites outside the largest ones is that often moderators comment on NAAs without actually deleting them straight away. This is an example I flagged five hours ago and I've redacted the site / moderator because it doesn't really relate to any particular site or moderator:
I can understand why say for a link-only answer a moderator may wish to give them time to improve the answer, but for a total non-answer from my understanding once a moderator deletes a post and leaves a comment the OP can still see that comment and still gets a ping message related to the comment?
Perhaps a moderator can clarify if my assumptions are correct and if so this might be a useful reference post for new moderators on handling total non-answers.