Looks like u got some reading to do BEFORE you buy your cham. No you cannot house them together, they can't even see each other, not even the shadows of each other. If you didn't know this i am assuming you haven't done much research yet. My advice is to do a little more reading before you purchase one. I would hate to see you buy one only to have it perish because of bad husbandry. Chameleons can be tough to keep even if you do all the right things which it is so important to know how to keep them. If u look through this forum you will find tons of important info. Good luck.
Debby