The king is now even more convinced that Ammon is "more than a man." For this reason, he dares not summon Ammon. Even a king may not give orders to a "more than a man," and the king has placed Ammon in that high category.
When Ammon finished his tasks, he reports to the king. This is not an audience requested directly by the king, but rather the simple reporting of a servant, and the presentation for the next ordered task. The events as Sebus, and the discussion between the king and the other servants and set a very different stage for this audience, however, and Ammon is walking in to an opportunity to teach, not to receive another task.