Original sentence: In 1964, CBS experimented with a half & half format for their announcers.The first half would be called by the home teams' commentators while the second half would be done by the visitors' commentators
Edited sentence: In 1964, CBS experimented with a "half-and-half" format for their announcers.The first half of each telecast would be called by the home teams' commentators while the second half would be done by the visitors' commentators