Sentence 1: The Crump family had a home in Bristol while Phil was racing in the British League , which he started doing in 1971 with the Crewe Kings .
Sentence 2: The Crump family had a home in Bristol , while Phil was walking in the British League , which he began with the Crewe Kings in 1971 .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?