I said "Since flowering requires no less than 12 hours of "darkness", we cannot simply leave the day lights on longer to get more photosynthesis."

But taken as stated, that's not correct. Sorry to have got you off on the wrong foot. What I meant was that at the rate that phytochrome converts (Pfr->Pr) in total darkness, the process takes 12 hours. You can make the process take much more or less time by altering the night spectrum. Red light makes less progress toward Pfr->Pr conversion, but more progress toward photosynthesis. Far Red light makes more progress towards Pfr->Pr conversion, but makes no difference to photosynthesis. This is how we can add photosynthesis but keep the phytochrome progress on track.
So if i were to revise this rough little schedule here to give you a visual of how I'm interprating that
Fr.....<---------------------------------------------------------->
R......<------------------------------------------------>
B......<------------------>
........0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

would that be more optimised? or do you mean you can have more blue "day" time?

I was kind of wondering with a schedule like the first one if the increased rate of conversion between pFr and pR affect the speed of the plants overall lifecycle like an instant autoflowerer, or even just to see what happens out of curiosity. assuming I've not gotten the wrong idea that that red and far red don't disturb the plants perception of night and that an equal amount of far red can revert phytochrome in a time equal to the red's photsynthetic period.