I'm so sorry the monster twins didn't make it. I'm curious if you could tell if they were in there both the same direction or like 69? And 6 is better than 0, so it wasn't a total loss. Sorry about the lost ones.... But you learned some things, so that's always a plus.
Both little heads were in the middle, which put the one on the air cell end bottoms up and the other with no air cell either. So sad...if I had been home they would have had a chance. And they were as big as the smallest of the single poults that hatched.