Housing together is no good. For any snakes.
1. Snakes are solitary creatures by nature.
2. If one gets sick, BOTH are now sick most likely.
3. You cannot moniter who is passing what waste, or if a regurg occurs, who did it. This can be vital.
4. If male and female pair, early breeding may occur which can be very dangerous for the female.
5. You will have to feed out of cage, speratly, then give time for any mouse smell to wear off, then fianlly reintroduce and hope neither is in a hungry enough mood to kill and eat the other.
IMHO with caging being so affordable, no snakes should have to share a home with another. Another snake in the enclosure means competition, which = stress.
There is no good reason to house them together either.
bmm