Complex sentence: They spent more time together in January 2008 at the World Economic Forum in Davos, Switzerland, and in March 2008, Facebook announced hiring Sheryl Sandberg away from Google for the role of COO.
Split into simpler sentences: They spent more time together in January 2008 at the World Economic Forum in Davos, Switzerland. In March 2008, Facebook announced hiring Sheryl Sandberg away from Google for the role of COO.