B.
My sister has twins that are 4, I have a son that is 3.
My sons speech is better than the twins, BUT that is because they have there own language. I remember my sister used to worry about it all the time, but she went to a couple doctors and one told her is is because they communicate with each other, Now that they are in preschool they have started talking ALLOT better, As for the beds, they did not want to be separated either, she put the daybeds together, kinda like a huge baby bed. She even told me that when she had to take them to day care for a couple weeks that the center separated them and it caused the one to just cry and cry.
anyway, you might go to the library, she got several books about raising twins -- they were numbers 6 & 7 for her, and she said it was so much different having two than one,
B.