The idea of LinkedIn Connected business application is to keep all your contacts (not just LinkedIn, but also iPhone, Gmail, Yahoo and Outlook) in one place to communicate more easily.

You can easily keep up to date with what they are doing, as well as find new contacts through search or suggestions. Simply swipe down from the top to access the main menu or side to side to see profiles.

LinkedIn Connected seems a bit superfluous, as it doesn't add any new features compared to the main app.