TTS on Bluetooth speaker via Raspberry Pi

Having problems with a Bose Mini Soundlink II

homeassistant@dadraspi3:/home/pi $ bluetoothctl
[NEW] Controller B8:27:EB:DC:02:47 dadraspi3 [default]
[NEW] Device 04:52:C7:56:91:FF Bose Mini II SoundLink

but not showing up

homeassistant@dadraspi3:/home/pi $ pactl list short | grep bluez
12 module-bluez5-discover
13 module-bluez4-discover

tts not showing in homeassistant menu

further investigations - this is not a homeassistant problem - its a Pi + Bose + Bluetooth problem, no connection.
tried the following, now connected:

❯ bluetoothctl
[bluetooth]# agent on
[bluetooth]# scan on
[NEW] Device xx:xx:xx:xx:xx:xx Bose Mini II SoundLink
[bluetooth]# trust xx:xx:xx:xx:xx:xx
[bluetooth]# connect xx:xx:xx:xx:xx:xx
Attempting to connect to xx:xx:xx:xx:xx:xx
[CHG] Device xx:xx:xx:xx:xx:xx Connected: yes
Connection successful

the speaker has to be in pair mode! - does not survive a re-boot
and tts still not showing in services menu of homeassistant