What is "Oxford style?" Do you have a reference? If you're talking about the 'Oxford comma', then that is definitely not a style advocating for gratuitous comm

What is "Oxford style?" Do you have a reference? If you're talking about the 'Oxford comma', then that is definitely not a style advocating for gratuitous comma usage in general, only an extra one on the final item of a list. Outside of lists, commas are used to separate clauses. They are never used so separate subjects and verbs, as that is always awkward and superfluous. It has nothing to do with pauses, and much more to do with coordinating intonation patterns.