Whether an utterance is a backchannel: short in time AND in words, and not a question (a question asks for
a reply, so it is a bid for the floor however brief). Unknown dimensions are not held against it, but with
neither dimension known the utterance cannot be classified and is treated as a full turn.
Whether an utterance is a backchannel: short in time AND in words, and not a question (a question asks for a reply, so it is a bid for the floor however brief). Unknown dimensions are not held against it, but with neither dimension known the utterance cannot be classified and is treated as a full turn.