The usual problem with "and" after nouns is that the eye/brain expects another noun. I would use a comma to avoid this, but the sentence isn't "wrong" without it.
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postmodernblissMy thought is that it doesn't need a comma because it's part of a compound subject compliment/predicate.I agree with you.
postmodernbliss2. Also, when it comes to the conjunction 'or', my understanding is the same thing applies.I agree with you. The coordinating conjunctions (FANBOYS) follow the sam