Chase migration - bill payment no longer avail

That is correct.  Express Web Connect + is a one way transfer, there isn't any way for Quicken to send/sync with the financial institution's bill payment system.

Quicken Inc which will instead suggest you use Quicken Bill Manager, but personally I wouldn't recommend it.
Here are some details that might help you understand the different terms/systems:
https://community.quicken.com/discussion/7916268/my-explanation-of-the-different-term-services-that-quicken-has-provides-and-provided-in-the-past