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Depending on the market, and how I was using credit, they took anywhere from 2 years to 3 months. The biggest ones came after I'd call them and ask them to lower the rate on $5k+ balances I was carrying with them. When they refused I paid and/or transferred the the balances. They responded shortly after with large CLIs.
FretlessMayhem wrote: Out of sheer, morbid curiosity, how long apart did the auto-CLIs occur?