Take them up on the study. Tell them when you left you were told the generation of 1914 would not pass away (I know they changed that just a little before you left, but they won't do the math). Ask them to explain that teaching to you as they currently understand it.
Stare at them like they are aliens if they actually do give you the "overlapping generation" bullshit.
Walk out on them. Should be priceless!