Sentence 1: He continued in this post when Winston Churchill came to power in 1940 and was also Churchill 's general postmaster between 1943 and 1945 .
Sentence 2: He continued in this post also when Winston Churchill came to power in 1940 , and was then Postmaster General under Churchill between 1943 and 1945 .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?