Unfortunately, it is a "both/and" proposition, not an "either/or."
What you can and cannot do under VISA rules does not negate your obligations under Regulation E. If you have a situation where a customer has not provided timely notice to the Bank, you still must follow the liability schedule of 1005.6. However, since the claim is late, you are not bound by the investigation or provisional credit requirements of 1005.11 so your investigation can take as long as you need it to, and you do not have to provide provisional credit. Even though you are accepting the cardholder's claim under Reg E, since it is outside the timeframes to qualify for Zero Liability protections, you are not obligated to provide them and can hold the customer liable for a portion of the unauthorized transactions based on 1005.6.
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