Taylor likes to bury the bad news in the small print.
The Study preceeding Direct, which I believe was called Counterpoint involved 11 participants & it's results were published in 2011.
https://link.springer.com/article/10.1007/s00125-011-2204-7#Sec3
There was a 12 week follow up of the participants where a 2 hour OGTT was administered.
View attachment 47992
So an average BG of 10.3 mmol/L @ 2 hours, just short of the diagnostic threshold of 11.1.
Now in Taylor's defence he may have subjected these patients to the OGTT a bit too early in their recovery.
The 2 Year follow up of Direct showed that it takes 12 months for maximal insulin output to normalise.
I'd anticipate better figures for this cohort had he given them a further 6 months.