2 Kings 8:28 provides the background that Joram was wounded at Ramoth-gilead, which is why he is lying in Jezreel when Jehu arrives.

2 Kings 8:29 fills in the detail that Joram returned to Jezreel to recover and Ahaziah visited him because he was ill, directly parallel to the note in 9:16.

2 Chronicles 22:6 parallels the same account of Joram's recovery and Ahaziah's visit, providing a consistent narrative in Chronicles.

2 Chronicles 22:7 reveals that God orchestrated Ahaziah's visit to bring about his downfall, adding divine purpose to the event.