Sentence 1: When the RPP was divided and Thapa broke away and joined the Rastriya Janshakti Party , Yadav formed RJP .
Sentence 2: When the RPP was divided and Thapa dissolved and the Rastriya Janshakti Party joined , Yadav formed RJP .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?