As gp is not speaking to themself, it's an interaction. So maybe gp is expecting them to inter-act, ie make some reciprocal action of some kind back. Silence i

As gp is not speaking to themself, it's an interaction. So maybe gp is expecting them to inter-act, ie make some reciprocal action of some kind back. Silence is an action, that in my culture usually means 'dont want to tell you my real response'.