Quote Originally Posted by lat9 View Post
There's a fairly long-standing change request (https://github.com/lat9/one_page_checkout/issues/163) for OPC, requesting that the guest-checkout "Customer Information" and "Billing Address" blocks be combined.

I believe that that change is going to be the best customer-experience solution for this autocomplete issue.
All finished. Check out the changes associated with the above GitHub issue; I've updated OPC's jQuery handler to combine those two blocks during guest checkout. Remember to grab both the full and minimized versions (they've both shrunk a bit).