I would recommend cohabiting snakes to experienced keepers only. Not only do you want to house two very large, sometimes rather irritable snakes together, but you won't be able to keep track of who's excrement (or regurg) is who's. And if someone is sick then you'll have to take BOTH to the vet, because you won't know who's the sick one and who's the healthy one (and if they're together they'd probably both get sick at about the same time if it did happen). I'm sure the vet bill for a Retic would be hefty.
Plus, have you SEEN the feeding response for a full-grown (or not even full-grown) Reticulated Python? Those things are like heat-seeking missiles packed with lots of large, sharp teeth and 300+ pounds behind them. And you want to put TWO together in the same enclosure then try and feed them? Sounds like a recipe for someone to get hurt, IMHO.
Long story short, I'd say if you want two Retics, get two enclosures.![]()