Any edited versions of a song (preview, truncated, looped) which appears at any point on a verified/official artist page or channel or the song’s distribution label’s verified/official page or channel will not have its streams from that specific service contribute to the Billboard charts.
A radio-serviced edit of a track would be considered a full-length version, as would most remixes in line with those that have historically been put up for sale or merged for charting purposes.
Any other altered versions – regardless of channel placement or origin – will be reviewed on a case by case basis.