Complex sentence: Hagrid had received a hint from Moody to show Harry the dragons, and he did indeed do this and brought Madame Maxime with him, who informed her champion, Fleur Delacour.
Split into simpler sentences: Hagrid had received a hint from Moody to show Harry the dragons. Hagrid did indeed do this and brought Madame Maxime with him, who informed her champion, Fleur Delacour.