Had another rotation between TXL-DUS this week.
BA Bronze was useless for AB's mini-lounge in TXL Terminal A. That automated access gate did not have a boarding pass scanner like in DUS and required swiping of a TopBonus or Etihad frequent flyer card. The hotline told me to try the BA lounge (which obviously Bronze would not help either).
On the way back from DUS, mini-lounge access with a boarding pass stating "Priority Fast Lane" worked again without a hitch.