Originally Posted by
gloreglabert
The seatmap is an advertisement.
That's a stretch, if not entirely incorrect. This is an actual advertisement:
Lie flat to London. Every time.
From 36 U.S. cities – together with British Airways
Every flight between the U.S. and London Heathrow (LHR) offers fully lie-flat seats in First and Business Class.
Choose from more than 70 daily flights with our partner British Airways – all featuring fully lie-flat seats. It’s the best premium experience across the Atlantic.
AA's seat maps are typically encountered only in the booking process and say nothing themselves about whether seats are lie-flat.