Missy, I honestly have no idea as to the timing of it. My only mission was to escape paying so much in interest every month. All my cc's combined, added up to like $150-$200 per month, in interest alone. That's a lot of money for me

That's come to a screeching stop by pif'ing.
I started doing that back in April, and made no attempt on any cc to lower the rate. It just came by accident that Cap1 offered me those 2 choices.
My feeling is that the longer you've had the cc, and the longer you pif every month, and have no lates, then they are much more inclined to be nice to you.

Plus(and this may seem silly), if you pif every month, then the rate issue becomes a moot point. I was just wanting to escape paying so much in interest.
I've had my Cap1 cards for a little more than 6 years. I had 3, but last month I combined a lower limit visa, with a higher limit visa. Plus I have a MC card with them.
Sorry I couldn't give you a better answer. Maybe someone else will chime in with their experience.