Sounds like the AA Flagship First lounge is going to be your best bet on a T8-T8 transfer. Probably wise to have a look on the AA forum to see what's cooking there these days.
EDIT Just taken a look for my own curiosity and the answer is not a lot:
Link to AA.com here
Last edited by 1Aturnleft; Apr 23, 2021 at 5:58 pm