At the end of the listening process you "provide feedback".
The responding or feedback stage of listening happens when an audience gives verbal or nonverbal feedback about the speaker or message.
Amid the reacting responding or feedback stage, audience members can give speakers two kinds of feedback intended to enable a speaker to know whether an audience is understanding and what the audience thinks about a message. Formative feedback is given while the speaker is occupied with the demonstration of discourse making. Summative feedback is given at the determination of a discourse.