back channel

Meaning

1. The smaller of two channels in a river that diverge to form an island.
2. A secondary channel of activity, typically in parallel with primary channels and somewhat independent of them.
3. An unofficial communications channel used to make informal or subversive negotiations.
4. A real-time online discussion that occurs simultaneously with a verbal presentation.
5. A gesture or short prompt by which a listener invites a speaker to continue.

Synonyms

backdoor

back door

back-channel

Google jockeying