Shared Names Across Branches

First-century Jewish naming was densely patronymic with a small name pool; the same name recurring in different generational branches is expected, not suspicious. The two genealogies converge at David (both agree to that point) and at Shealtiel/Zerubbabel (post-exile); they diverge between and after those convergences. The convergences confirm both lines as genuine Davidic descent; the divergences confirm the two lines are tracking different ancestors.