Define default Bluetooth dongle

Hey there , i would like to connect some ble devices to the HA using external Bluetooth dongle,

it seems that the default dongle is the external one i have connected,
how can i tell if the HA connected using this dongle or embedded dongle in the PI?
( i need to extend the distance so the one in the pi is not good).
this is the info from pi
pi@hassbian:~ $ sudo bluetoothctl
[NEW] Controller 00:1A:7D:DA:71:11 hassbian #1 [default]
[NEW] Device 4C:65:A8:D9:6C:A6 MJ_HT_V1
[NEW] Controller B8:27:EB:57:6D:3A hassbian #2
[NEW] Device 4C:65:A8:D9:6C:A6 MJ_HT_V1

Sorry for necroposting but I have the same question


simply add adapter id

  - platform: mitemp_bt
    name: Mi01
    scan_interval: 40
    adapter: hci0
    mac: '4c:65:a8:d9:6c:a6'
      - temperature
      - humidity
      - battery      ```

Thanks :slight_smile:
How to know hci number?