Complex sentence: Cf. Gifford & Richmond, "The Glory Game", 2008, p.291 Frank and Kathie Lee shared the same birthday (August 16) and co-hosted ABC's coverage of the 1988 Winter Olympics in Calgary.
Split into simpler sentences: Cf. Gifford & Richmond, "The Glory Game", 2008, p.291 Both Gifford and his second wife shared the same birthday. In 1988, the couple co-hosted ABC's coverage of the 1988 Winter Olympics in Calgary.