If you're using DAB radio on Intellilink, that does not use phone data, it's not connected through your phone at all. However, when you're using Intellilink App "TuneIn Radio" to listen to internet radio through the App that will use data on your phone..
With regards to BringGo. Once you have in App purchase of Western/Eastern European Map, maps are actually on your phone and so it does not use Data for mapping information. However, it does use small data to update traffic information on your route.