Many scholars took that even if Emperor Keitai was in fact the fifth descendant from Emperor Ojin, in view of the notion of dynasty in European sense, it was really a separate dynasty and independent of the theory on the changes of dynasties there was change in the imperial line from Emperor Keitai.
なお、継体天皇が事実応神天皇の5代の末裔であったとしても、ヨーロッパ的な王朝の概念からみればこれは立派な別王朝であり、王朝交替説とは関わりなく継体天皇をもって皇統に変更があったとみなす学者は多い。