(1) He was also employed by CBS Sports as a regional CBS NFL and CBS NBA announcer from 1976 to 1979 , after which he moved to NBC .
(2) He was also employed by NBC as a regional CBS NFL and CBS NBA announcer from 1976 to 1979 , after which he changed to CBS Sports .

Do these two sentences mean the same thing?

Options: (1). no (2). yes
(1).