"Locked separate container"
So you mean you don't know? Ok cool thanks....
The letter of the federal law states "separate" in black and white. It's hard to imagine the word would be added unless it was meant to mean separate in the way that most reasonable people would interpret the word, i.e. not physically connected. The whole sudivided container vs conmected containers thing, while being used as a joke here, seems like splitting hairs.
For me, it would be easiest to just conform to the letter of the law in a manner that's unambiguous and not really open to some traffic stop LEO's interpretation.
So you mean you don't know? Ok cool thanks....