I bought two birds and was wondering if it was more difficult to work with two birds together than it would be to try and tame just one.

I'm not a pro or anything, but I believe one at a time would be plenty! when I'm working with my birds, I will train one bird with the "victim's" back to the other caged bird.... Hoping that the other bird will "catch" some of the training session. (they are some 20 feet of distance apart from each other) I think it's very important to focus solely on one bird so you can catch any little trait and use it fully.
Just an opinion from my limited experience.
I wish you the best... training IS challenging but so much fun when you see the results.

I agree, training/taming two is twice the work as doing one. I've had my fair share of taming two (sometimes three!) birds at one time and it is hard work. I also find that it takes a lot longer to tame them down because I can't focus all my attention on just the one. You have to spread it around

I agree one at a time is probably the best ..
Good luck and be patient, I noticed in your other post the birds were hand reared so it should not be dificult to teach them to step up and behave ..although even trained fids (feathered kids) can be naughty ..

I would base it on the birds personalities and what you are trying to do. When we got our love birds that were completely wild and we had to train them together at first because they were so use to being together that they would be too distracted looking for the other one. We had to start from the very basics with them. Now there are a lot of tricks that he will do that she won't, even though they have both been taught. She just really isn't interested.

With Drago I have a feeling that we are going to have some problems training him because we have other birds trained. They want to train along with him and they get annoyed when they are left out.