As a nice datapoint.
Previously getting the "This is not a boarding pass. You are checked-in" message (either requiring a document check or SSSS) I would not really be checked in when departing the EU and placed on the Upgrade Standby List for a connecting domestic flight.
Today I am getting the TINABP message and am on the list for my domestic connection; so it seems some improvements have been made (or there's yet another reason why I'm getting the TINABP
).