Hue Bridge and Xfinity Gateway not working together

I have the XFI Gateway and a Hue Bridge 2.  Trying to get them to work together.  I plugged my Hue Bridge 2 into the back of the gateway and it is not working.  I need to get the Hue Bridge connected to the gateway in order to run the Hue Lights in the house through the app.  I use the Gateway to run the internet and for the wireless TV boxes, so putting the gateway into bridge mode is not a good option for me.  Is anyone aware of a solution for this problem?  Both Xfinity and Philips have had good suggestions but no solutions.