What does 1 Kings 16:29 mean?

Ahab, son of Omri, became king of Israel in the thirty-eighth year of Asa’s reign over Judah. He ruled in Samaria for twenty-two years. 1 Kings 16:29 - Modern Text Bible

(Ahab’s reign begins, and he rules for a long time compared to his predecessors. The timeline is again tied to Asa’s reign.)