Getting two puppies or 2 older dogs at the same time, may sound like a great idea. Good company for each other, you may think. One puppy/dog on its own is alot of work let alone 2. If you are not careful they will bond with each other and not with you.
They need to have one on one time/training, spent with them, so you can teach them to listen and learn and bond with you. Separation related issues can become a major problem as well, if the dogs bond too much with each other.
Below is a link to another really good article on “Problems Associated With Adopting Two Puppies at the Same Time”