My now-agent took more than a month to request a full from me, which came as a surprise since I'd read that if I didn't get a request in a day or two, I never would. But my belief that requests had to be instant did encourage me to forget about queries as soon as I sent them, which was better for my overall peace of mind. I never looked at response times, just reworked the letter and moved on to the next agent on my list, assuming the previous ones were probably nos.