A two week quarantine really isn't going to accomplish all that much unless you have a vet appointment set up during that time to confirm health and the absense of internal parasites. External parasites, in particular mites, have a 30 day life cycle so you want to quarantine at least a few days past that point (minimum).

Housing with your other snake is generally considered a poor idea. They have no need for companionship not being a herd or pack type creature and only naturally coming together once per year, to breed when they are sexually mature. Things that communal housing can create...

- dominance over space, water source, etc. (often perceived by humans as "friendly cuddling"
- out right biting when hungry or recently fed
- cannabalism
- spread of disease
- double the vet bills as you often can't tell which one is actually ill because you can't for instance judge by feces, not knowing which snake did it
- refusal to eat by the snake being dominated
- long term stress which can supress their immune system leading to things like respiratory illnesses which will spread to both snakes (and again, double vet bills)
- unnaturally slow or diminished growth patterns due to feeding refusals, stress, and illness

1 snake per enclosure is always best except the brief times adults are put together for a carefully planned out breeding attempt.