I am trying to figure out how to hear the countdown beeps in my headphones. I was always able to hear these with my Forerunner 245 Music as there was a setting under AUDIO PROMPTS called AUDIO TONES. While listening to music... there would be 5 tones that would sound 5 seconds before the next training segment. On my Fenix 6 Sapphire... this setting is not available. II hear the tones without headphones coming from the watch directly... but while listening to music through BT headphones, the alert tones don't sound. Thoughts?