Decided to have another crack at the comms.
Samsung to tft , cardo freecom connected to tft as gps connection.
All works well apart from the spoken instructions for navigation are way too quiet, volume is up on phone and the media volume is ok.
Plus, just discovered that when i have a pillion connected, then the music etc stops and starts continuously.
Pillion is connected via freecom, not the tft.
Any help very much appreciated