It’s currently much cheaper to buy from AA for a BA First flight to EWR.

Do I get to check in through the gold wall into the hush of BA First check in?

Can I use the Concorde Room?

AA baggage allowance?

MMB? VeriFLY?

Anything else I should be aware of?

First world trivialities in current situation of cancelled flights and lost luggage but of interest for end of this year