silk tangle
First off, I'm not sure if this would be even possible.
What if there was a moon with multiple interiors.
Start near one main entrance, when you go through the interior and find the fire exits, they lead to an area on the exterior next to the main entrace to the second dungeon. Maybe there could be a fast travel thing that could be activated, so now people can easily get to the second dungeon for the rest of the day.
silk tangle
Different, like there is 1 interior that you have to pass through to get to a 2nd interior.
So 2 main entrances, 1 for each interior, with their own fire escapes ect.
The first thing that pops to my mind is a tall mountain, main entrance enters facility, fire exit pops out halfway up the mountain in front of a second main entrance which enters the mansion and mansion fire exits pop out at the peak.
That type of thing.
Though an interior mixer sounds like absolute chaos randomizer type shenanigans that I can get behind seeing.
gentle karma
third door type that interconnects them
silk tangle
Or something like that
shrewd forge