Thanks, that's what I thought; everything goes to the speakers and if they are turned off, the bluetooth gets activated and so everything then goes via bluetooth.
In the bluetooth pairing manual it suggests pairing the bikes audio output and the GPS as separate devices. This suggests that the GPS audio is not integrated which is going to cause a problem.
In the non bluetooth world, as with my current Autocom setup, it knows that an audio source is from the GPS and acts intelligently. This is also true for mobile phone and bike to bike integration.
Anyway, let's wait for an owner to comment. I won't be picking my GTLE up for another couple of months