Thanks for your effort on this! Unfortunately I feel this is still a bit off from the original.

It seems better to keep this comment short and focused, because the behavior has already been explained in the paragraphs above this. This is just there to point out to the reader "remember what you just read? You are seeing it in action here now!"

Perhaps something like "If [] is returned instead, it will not work with the code above because it can't be chained". This is probably still not ideal, but you can iterate on it and see if you can come up with something better. (Or keep the original, it's not too bad if you read it in context)

Also, for the future, no need to use the `inspect` output format. In this case "a relation" is just fine. In other case you would use "an ActiveRecord::Relation" if  the name has not been referred to previously or if it could be ambiguous