"did not since" is not a valid phrase in written English.
It is not a phrase at all. If you want to use a phrase with a similar meaning as "did not since," you could use "had not since" or "had not up until that point." For example, "He had not been to the beach since he was a child."
But Republicans said it did not, since it reversed $1 trillion in across-the-board cuts but did not count that against their spending cuts.
The Greeks almost certainly did not, since, from their viewpoint, hieroglyphics were not phonetic signs but symbols of a more abstruse and allegorical nature.
Hicks insisted on a press release revealing the news while Gillett did not since he did not consider it something to be triumphal about.
Although the legal proceeedings shed light on various restrictive practices in the business, he did not, since Justice Jonathan Parker found that Michael's contract was "reasonable and fair".
The results, published online on Wednesday in The New England Journal of Medicine, applied regardless of whether the patient survived; most did not, since frequently patients in such dire condition cannot be saved.
CREDIT where credit is due; Paul Krugman anticipated this where many others did not:Since late 2007 the monetary base has risen more than 300 percent, while GDP and consumer prices have risen less than 20 percent.
But he didn't, since he gave every penny to his wife and children".
It might have been better if she didn't, since she bulged out considerably above and below.
It probably didn't, since the headline is the only thing that has remained in my memory.
Not sure how historians missed it (perhaps they didn't, since I don't read books, I wouldn't know).
Indeed it does not, since it is not going to save this earnest and overlong show.
