Sentence 1: Marian Schreier was the mayor of Tengen from 1973 to 2015 , and his successor was Helmut Groß .
Sentence 2: From 1973 to 2015 , Marian Schreier was the mayor of Tengen . His successor is Helmut Groß .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?