Using no commas or 1 comma when there's an adverb

Question

"Michael and Lucy too, also eventually reveal their wish to always be together even when their relationship is on the brink of destruction."

"Still though, they can’t give up George and, despite knowing they might be on the path to destruction, neither girl can accept defeat and the battle continues.

"Too" in the first sentence and "though" in the second. Is it correct this way or would I have to add another comma? (Still, though, they...; Michael and Lucy, too, also...)

I want it to fit the chicago manual of style, so please bear that in mind. Would The sentences I quoted be correct according to that english style?

Or maybe I should not use comma at all like in this sentence, where the however has no comma.

"The second movie however also includes moments of humor"

I already know that using 2 commas is correct in all the sentences I quoted (please confirm that this also applies to the Chicago English Style though). My question is whether using just 1 comma there would be acceptable according to the Chicago English Style. Or even using no commas at all.

Answer 1

The second example has to be read with an intonation break between "still" and "though", which justifies a comma there, since those two words do not form a syntactic constituent. That's my personal opinion -- I have no idea what a follower of the Chicago Manual of Style (which I am not one) would say.

However, I have seen the opinion expressed that one should be careful to avoid using lots of commas, so even though there has to be an intonation break before "though", perhaps a stylist would prefer not to use a comma there, because it looks ugly. The absent comma makes the sentence a little harder to understand, but it's still possible. I had to read it twice.

Your first example seems ungrammatical, to me.