Now you know why trainers don't recommend getting two puppies at the same time! It's a huge amount of work, made worse by the fact that puppies are just like kids and pick up bad habits from another.
Trainers recommend individual training for each puppy, separate puppy classes, and even separate crates, etc. Hopefully working with them individually will help.
Two Puppies or One? - VeterinaryPartner.com - a VIN company!
How old are they? If they are 6 months to a year, they are in their terrible teens. Double the trouble in your case!