That is, the theory says, genealogically, both 'the theory of Emperor Richu's Princess' and 'the theory of Prince Ichinobe no Oshihano's Princess' are right and Richu Princess was different person from Richu Imperial descendant and both were in the relation of aunt and niece.
つまり系譜上での「履中天皇皇女説」と「市辺押磐皇子王女説」はどちらも正しく、履中皇女と履中皇孫は別人で、両者は叔母と姪の関係であったという説。