Unfortunately, you don't know you've been lucky yet. Snakes are fantastic at hiding illness and it's definitely too soon to know for sure both animals are healthy.
And please know I'm not trying to be rude, but quarantine is a pretty basic step. This is why it's so important to put in ample research and due diligence before bringing animals home. They rely solely on us to survive. So we owe it to them to learn all we can to provide them with the best lives possible.