Typically, an official response to the request would arrive after half a year.
After 45 responses had arrived, I added a few questions and re-sent the questionnaire to the women who hadn't yet replied.
When one party sends a dialog request, several different 2xx responses may arrive.
Emails were ignored (a response eventually arrived three days' later).
Years might pass before response arrived, but that it would arrive eventually was certain.
On 26 December 1943, a response to the Australian protest arrived.
A response should arrive before the week is out.
With all of the negative news, the official response from France also arrived.
His response to my complaint, as the diplomats would also say, should arrive shortly.
The response to my offer arrived fairly quickly, within two weeks.