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https://www.crosswordclues.com/clue/backchannel

Backchannel is the practice of using networked computers to maintain a real-time online conversation alongside the primary group activity or live spoken remarks. The term was coined in the field of Linguistics to describe listeners` behaviours during verbal communication. The term `backchannel` generally refers to online conversation about the ......
Found on
http://en.wikipedia.org/wiki/Backchannel
[linguistics] In linguistics, backchannels are listener responses in a primarily one-way communication. These can be both verbal and non-verbal in nature, and are frequently phatic expressions, primarily serving a social or meta-conversational purpose, rather than involving substantial two-way communication. The term `backchannel` was desig...
Found on
http://en.wikipedia.org/wiki/Backchannel_(linguistics)
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