Neither of those twin babies may be able to move enough to get into position to pip. If you do a thread search on successful twin hatch, you may find that the ones that have been successful have been assisted even to the point of making an external pip through the air hole, then opening the membrane when blood vessels have subsided. I really don't know, but am just tossing that out there for you to do some research on.
Xs2!
Update on the twins!