Later, when the Duke and Duchess still walked past these signs, faced with this act of ignoring the signs, Versailles ordered that no one could not obey the signs.
Later, while the Duke and Duchess walked straight past the signs, Versailles ordered that no one should not obey the signs in the face of such disregard.
Later, the Duke and the Duchess still walked straight past the signs. In the face of this act of ignoring the signs, Versailles ordered that no one should not disobey the signs.