You know, it really just all depends on the individual birds and their personalities. For example, my CAG absolutely LOVES my Mother's Sun Conure, KiKi and she LOVES him too, preen each other the whole works, it's super cute, but, on the other hand, my CAG, Maui does NOT care for ANY of the other 5 Sun Conures OR the Budgies OR the Lovebirds OR the cockatiels or finches, LOL.. So, it just really depends on each and every single bird and their personalities. I believe that if they are in the same household with each other and are exposed to one another daily, they will at least tolerate one another, so you shouldn't have any HUGE issues, but you should always supervise them while out of their cages together, flying about, as Barb has said. Alot of times they may not LOVE each other, but, they will be respectful of each others space and not cause a raucous, if one invades the others space and it's upsetting to the bird, the bird will most definitely let the other one know that whatever he/she's doing isn't acceptable, which is why it's a good idea to keep them supervised, it's the "just in case" factor, because accidents can happen and sometimes it only takes a minute or less for an accident to turn fatal.
Good Luck to you!! I hope they get along beautifully, because it is really sweet when they do!!