Word groups can change their meaning based on where they are located in a sentence. We understand this intuitively in conversation without even noticing it.
For example we know that in this sentence...
...the dog is doing the chasing and the cat is being chased.
And that if we swap them around...
...then the meaning also swaps: the cat is now chasing and the dog is being chased.
It’s all based on position
Supporting clauses have the same power of being able to move around quite fluidly and change meaning as they move, whereas simple sentences with connectors tend to be more brittle and clunky.
That's because supporting clauses can leverage the power of position in a sentence, whereas connectors have to be laid out according to their defined meanings.