Hi alanalg
I have used an HC-06 with my Arduino Uno but I was able to connect it by using the softwareSerial library, but unfortunately is not currently supported take a look at this post https://communities.intel.com/thread/47898 . I don’t have the XBee but I’ll do some test with my Bluetooth shield and the Galileo. If I’m able to connect it I’ll let you know.
Regards
JPMontero_Intel