I believe this is the case with any credit card placed into an Apple Wallet for Apple Pay, regardless of the card issuer. Every charge initiates a notification.

I found this useful when I was wondering about a charge that I wasn't expecting pop up. I logged into the card issuer's online portal and found that it was something I care about, but simply forgot it was pending. Though if it was a fraudulent charge, I could've just gave them a ring. It certain can help in noticing fraudulent transactions in a much shorter time frame than simply waiting for a statement.