Another nitpicky comma question that I hope you will help me to resolve.
How does one need to punctuate the noun of direct address (or vocative) in the middle of the sentence that goes directly after coordinating conjunction connecting two independent clauses in a compound sentence? Are the bracketed commas required in the examples below?
I was going to accept your resignation later, but[,] John, have you considered all the options first?
I will be flying with the executive committee to London, and[,] John, will you be coming with us?
Ignore the actual examples. I just want to understand the punctuation.
My research and some other threads on this site seem to suggest that eliding the middle 'after-conjunction' comma is allowed as the style decision in cases where the conjunction used to connect two independent clauses is followed by an introductory or parenthetical phrase (some references at the bottom). But would that be allowed for nouns of direct address as well, and if yes, could we then conclude that it's an acceptable style to drop the first bracketing comma after conjunction irrespective of the type of the bracketed element (introductory, parenthetical, aside, noun of direct address, etc.)?
Would this style be allowed in formal, technical documents?
References from a few sources below.
When a parenthetical element — an interjection, adverbial modifier, or even an adverbial clause — follows a coordinating conjunction used to connect two independent clauses, we do not put a comma in front of the parenthetical element.
An introductory word, phrase, or clause following a coordinating conjunction in a compound sentence leaves the writer with several options:
Option 1: The curves in figure 2 are less familiar with geometrical objects that those in figure 1, but, other than the top curve, they have a reasonable shape.
Option 2: …in figure 1, but other than the top curve, they have…
The first option includes all the punctuation that the sentence structure suggests. However, at least one comma could be eliminated (second option) without sacrificing clarity.
When a parenthetical or unnecessary expression precedes the second clause in a compound sentence, keep the comma before the conjunction and use one comma after the parenthetical expression.
l. I liked him very much, but to tell you the truth, he was a liar.
m. He was standing on my left, and if I remember correctly, he wore a gray overcoat.
n. I wondered how I missed seeing her, and as a matter of fact, I still do not believe she passed my desk.