Complex sentence: Björk and Huang discussed the creation of the video during a Facebook Live streaming on 15 September, while it was confirmed that the video will be premiered online on "Nowness" website on 18 September 2017.
Split into simpler sentences: Björk and Huang discussed the creation of the video during a Facebook Live streaming on 15 September. The video premiered online on "Nowness" website on 18 September 2017.