I have only ever successfully connected my SRL2 to the Nav VI once. Since that initial connection, I can now hear speed cameras alerts in my headset from the Nav VI, and I can play media from the Nav VI to the headset, but I cannot hear spoken route instructions from the Nav VI.  What connection option on the SRL2 should I be using with the Nav VI on a BMW bike which also has a TFT screen?  I have tried  Phone 1, Phone 2, and GPS is there something else ?