Harry had no chance to speak to Ron or Hermione in the chaos of leaving; they were too busy heaving all their trunks down the Leaky Cauldron’s narrow staircase and piling them up near the door, with Hedwig and Hermes, Percy’s screech owl, perched on top in their cages.
There are no more uses of "chaos" in the book.
Show samples from other sources
The country entered a period of civil war and chaos.
Everyone ran around trying to help, but there was no organization and little was accomplished in the chaos.