Sentence 1: When he succeeded Plettner in 1981 , Karlheinz Kaske became the first chairman of the supervisory board not to be a member of the Siemens family .
Sentence 2: When he was succeeded by Karlheinz Kaske in 1981 , Plettner became the first chairman of the supervisory board not to be a member of the Siemens family .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?