User blog comment:Miskos3/Fairy Tail Episode 264: Tartaros arc: Drops of Fire, Review/@comment-85.193.154.170-20151221075020/@comment-4829046-20151221081722

Technically, it is the first time they are doing Acnologia and Igneel outside of still shots and small frames.

Also be mindful that in the manga as well, Dragons communicated telepathically and opened their mouth for dramatic or comedic effect in most cases without giving evidence that they actually spoke every sentence.