Free ranging different species (not to mention multiple individuals at all) is very hit or miss. It really depends quite heavily on the individual personalities of everyone involved. Some animals, regardless of space, are just always going to hate each other.
I used to free-range 4 male panthers, 1 make Jackson's, and 1 female veiled in the same house. Some formed very close friendships (two panthers, for example, or the Ambilobe and the female veiled) and would seek each other out while others hated each other (like the female veiled and everyone else, or the Jackson's and one particular panther.) I actually found that my little female had the nastiest attitude towards others vs. any of the males.
If one day one crosses the room and they choose to hang out together peacefully, then great. But it's definitely hit or miss.
