Bank's attorney is a director of bank. Bank uses this attorney as a closing agent. Attorney is listed on the AfBA.
If bank customer uses another attorney in town, should bank still give the AfBA?

The AfBA disclosure is only required if a referral is made.

Attorney is listed on the AfBA.

If you are referring to your list of service providers then you would need the AfBA disclosure at the time you provide the GFE because you are making a referral by listing them. This is addressed in the RESPA 4/2/10 FAQs.