I've been paying all my bills electronically for the last two decades. I have always used pull, and have never had a single problem. In fact, I have never done a push payment in my entire life. Just go into Amex and set up your Chase payment account and be done with it.
Daily Carry: PenFed Power Cash • NFCU Flagship • NFCU More Rewards • Chase Freedom
Sock Drawer: PenFed Promise • NFCU cashRewards • Chase Sapphire Preferred • Chase Freedom Unlimited • United Explorer • UNFCU Azure