Welcome to Flyertalk.
Chase has the same types delays.
We know that Capital One transfers are processed by a third party. I do not know if Chase has a similar arrangement, but it would be consistent with their general way of doing business.
how about AMEX to flying blue? Every blog says instant but AMEX says up to 48h. I have points everywhere but I don’t want to transfer multiple times in case the Cap1 shows up in a week. Flight hold expires in a day.