But WHY didn't Ahab kill Ben-Haddad?

Why is Chapter 20 of Melakhim located where it is? It appears to be a battle narrative that is out of place with the surrounding chapters. And why is there such an emphasis on Ahav building up Yeriho (Jericho)? Why is God displeased by the end of the story in Chapter 20?

Rabbi Gad Dishi brings the perakim to life through an interdisciplinary approach. Literary and linguistic tools, Ancient Near East studies, and archeological findings all enhance our understanding of Tanakh and of the important theological message within. Linguistic and thematic parallels to other parts of Tanakh and to other texts call into question whether these stories are meant to be read as battle narratives -or whether they are a different genre: a satirical polemic with an important message.