The speed of the response is the response.
In an impatient world where everything matters and everybody’s watching, the smartest thing we can do is get back to people promptly, not just when we can.
Even if the answer is no. Even if the answer is I don’t know. That we actually responded immediately is rare enough to be remarkable. That we actually showed up and dared to care is enough to make most of us happy.
Most people would rather hear no than hear nothing.