Congrats on Apollo! You should share some pics!
Just a nitpick, but hamsters are species, not breeds
On another note, I wouldn’t allow your hams to interact, even through bars. It can be quite stressful to them, and could potentially result in injury if one were to bite the other. Are you planning to introduce them to one another? If so, I’d like to discourage you. Two unfamiliar hamsters should never be introduced to one another. Most times it will end in fighting, and severe injuries (if not death)