User blog comment:Omega natsu2/Episode 176: The Dragon King, Review./@comment-24536822-20140406201326/@comment-7418318-20140407145803

Whether it was planed like that or not quite frankly doesn't matter.

If Lucy had called out to Natsu and Atlas or they showed that, despite the distance and the fight they were in, they still heard her and intentionally knocked Motherglare into the Gate, that would be relevant, but since that didn't happen, the journal just ended up as something completely useless within the story and a mere tool for explaining what happened after the destruction to the readers, which could have been done better in a different way.

Just adding a single text bubble with "I heard you Lucy!" or rather "I heard you Human girl!" coming from Atlas, would have been all that was necessary to make the journal relevant and helpfull to the mages of the main timeline.