A sentence with Independent clauses but no conjunction

[Bhikkhu1991a]

Hello,

The highlighted sentence in the excerpt of the listening transcript contains two independent clauses. They are separated by a comma and have no conjunction. Can I conclude the sentence is called “asyndeton”, a rhetorical device?

Here is an excerpt from the listening transcript:

Listening Comprehension Transcript

If you're thinking about getting new windows, now is the time. I'm Frank Miller, president of Seal Windows, and this month we have special discounts on all our fantastic triple-pane windows. Our windows not only look stylish, but they will save you money -- guaranteed. That's right, our incredibly efficient windows, filled with kryptonite gas, will save you at least 35 percent on your heating bill, or we will refund your money. We're so confident in our product, we'll put it down in writing. So what have you got to lose? Get great windows, and save…

TOEIC listening part IV, set 10, exercise 9

http://www.english-test.net/toeic/listening/a_radio_commercial_for_window_installations.html

Thank you.

Best wishes,
Bhikkhu1991a.

[Mister Micawber]

I would hardly dignify it with that term. 'That' is merely omitted and a comma improperly inserted: it is the writer's transcription of spoken English, actually.
_________________
Native English teacher at Mister Micawber's

[Allifathima]

We're so confident in our product that we'll put its guarantee down in writing.
Is this sentence correct?

[Mister Micawber]

Yes.
_________________
Native English teacher at Mister Micawber's

[Bhikkhu1991a]

Hello Mister Micawber,

Thank you for your expertise guidance. Since the highlighted sentence is transcribed, I think the comma is a typographical error. Therefore, is it appropriate for the comma to be replaced with only a semi-colon?

Here is an excerpt from the listening transcript again:

Listening Comprehension Transcript

If you're thinking about getting new windows, now is the time. I'm Frank Miller, president of Seal Windows, and this month we have special discounts on all our fantastic triple-pane windows. Our windows not only look stylish, but they will save you money -- guaranteed. That's right, our incredibly efficient windows, filled with kryptonite gas, will save you at least 35 percent on your heating bill, or we will refund your money. We're so confident in our product, we'll put it down in writing. So what have you got to lose?Get great windows, and save…

TOEIC listening part IV, set 10, exercise 9

http://www.english-test.net/toeic/listening/a_radio_commercial_for_window_installations.html

Thank you.

Best wishes,
Bhikkhu1991a.

[Mister Micawber]

A semicolon is not possible. Semicolons act in place of coordinating conjunctions; they separate independent clauses.
_________________
Native English teacher at Mister Micawber's

[Bhikkhu1991a]

Hello Mister Micawber,

Thank you for your expertise guidance again. I am so sorry that I overlooked the correlative pair “so…that” in the first place and treated the “so” as an adverb that meant “very” or extremely”.

Now, I have understood you are referring to the correlative pair. As far as I know, the second part of the correlative “that” is usually omitted in sentences. However, I have a problem. How do I tell the difference between the correlative “so” and the adverb “so” meaning “very”? Besides, is it correct to use the latter in the following construction?

We're so confident in our product, and we'll put it down in writing.

Thank you.

Best wishes,
Bhikkhu1991a.

[Mister Micawber]

How do I tell the difference between the correlative “so” and the adverb “so” meaning “very”?-- You must understand the sentence, that is all. Note however that 'so' = 'very' is considered casual and poor English.

Besides, is it correct to use the latter in the following construction?-- Not really (though I wouldn't put anything past a marketeer), for the reason I gave above.
_________________
Native English teacher at Mister Micawber's

[Bhikkhu1991a]

Hello Mister Micawber,

Many thanks for all your help.

Best wishes,
Bhikkhu1991a.