Hey @DanMan5464, 

Our music is now streamed in Hifi quality and not mp3, so yes you will be able to listen lossless audio! 

You might if your headphones are very close to your phone, but since LDAC is pretty quick to drop down to a lower setting to maintain a solid connection you might not. You can try forcing your LDAC connection speed to 990 Kbps from your Android device developer settings to see if it'll maintain the connection. 

Alltough I don't think it's possible because to stream lossless. The 16-bit/44.1kHz FLAC format is 1,411 Kbps. And LDAC is only 990 Kbps. So the LDAC bandwidth is not enough...?

You will not be able to get the %100 efficiency via bluetooh headphones, but the audio quality will be better than the regular 320 kbps. Deezer lets you stream the songs in 1411 kbps, and your headphones can transmit up to 990 kbps. So 990>320.

Misleading reaction,.. I would say.

-> No, you do not take advantage of bluetooth headphones when streaming lossless. Wired headphones, wired speakers or streaming via WiFi give you advantage over bluetooth. Because bluetooth doesn't have enough bandwidth.

Not necessarily. The uncompressed stream is 1411 kbps as you say, but bluetooth codecs compress data when transmitting so a codec like LDAC may have enough bandwidth to do it without losing data.