Originally Posted by
MSPeconomist
Be very careful with this. My undertstanding is that you must use the AmEx Plat card to pay for the entire rental in order to have the AmEx Plat card insurance converage.
He's talking about getting primary insurance coverage from his Chase card (not Amex) hence the reason he'd be paying with the chase card. The CDP you use for the rental is completely separate from the insurance coverage at least in this case. It's apples and oranges.