A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
I've noticed it, primarily for PM and especially DM. Good FAs do this and DL encourages it.
I assume this was long haul because DL is only officially starting EC on domestic about now, although the seats have been installed on most aircraft for a while.