Maybe not quite as big a deal for you, since if your room is warmish and humid and the substrate not very moist the difference might not be extreme....
You're lucky you don't have a dead rat snake- the size difference alone, the BP could have accidentally snuffed out your rat snake just laying on it....
The temps a humidity are great, I had those gauges out of the enclosure for a while and they cooled off and were not reading the humidity or temp of...
One other thing- you say they keep ending up together, & ironically that's one way it's thought that snakes "stress" each other- by competing for the...