One hide? I am not surprised they were stressed.
I have kept two together before with other snakes. Sufficient room to get away from each other and sufficient space and thermal gradients so they can have optimum temperatures without having to be in the same hide and fight/stress for dominance. Space to get away from each other. (like in the wild)
Like I said. I follow current best practice guidance for ball pythons and keep them separately. But our understanding and latest understanding continually changes, as does science. Science is just an approximation and is always evolving, changing and refining. Its never 'Truth' Just closer to truth with each evolution. We should therefore not be so fixed in our opinions. science fact was once that the sun when round the earth. Fact then but not current fact. All our understanding of 'truth' is fluid.
Dogma is the enemy of advancement of knowledge.
I am tempted to build a very complex viv to accommodate for all this and test it out with ball pythons. Ball pythons are not so different to other snakes.
Controversial yes. but so was Galileo
Accepted views should always be challenged even if we are wrong, otherwise there is no learning, growth or change.