People call United's 772 and 747-400 2-4-2 seat business class configuration "coffin seats" because of how stacked and narrow they are. I've flown it, it's not

People call United's 772 and 747-400 2-4-2 seat business class configuration "coffin seats" because of how stacked and narrow they are. I've flown it, it's not particularly comfortable; but at least it's a lie-flat seat.