Was a Mayday called? I haven't heard that it was.
The term 'Mayday' is never used in the U.S. by civilians in my experience. We don't do practice 'Pans' either. The British obsession with published R/T procedures is just not in our culture. We probably could do a little better on the radio at times but we tend not to stand on ceremony in the air.
'We've lost both engines' is more than sufficient to alert a New York controller to the urgency of the situation whether or not an emergency was formally delcared.
There are some fine differences in terms like 'minimum fuel' and 'declaring an emergency' when it comes to ATC priority but in general we express ourselves in plain language when we need help from ATC.