Joining multiple clauses in a single sentence using comma? Was a question on the other site, but he's chaining multiple dependent clauses with 'which'. But in contrast with that question: using multiple coordinating conjunctions with dependent clauses and commas?
Most grammar sites state this:
Use commas to separate independent clauses when they are joined by any of these seven coordinating conjunctions: and, but, for, or, nor, so, yet.
But doesn't this contradict connecting dependent clauses connected with coordinating conjunctions with commas? Are there any rules?
Although there was not a cloud in the sky, and because Mary arrived at the bus station,
partly because he was afraid of raising expectations even higher and he did not want to be distracted by interviews and adoring fans who would follow him into stores and restaurants demanding autographs and photo-opportunities, but mostly because he wanted to conserve his energies and concentrate on the job at hand.