CI 0 does not give max endurance. It gives minimum trip fuel. Thats why it commands best time to climb as jets burn lots down low.
Green dot is best angle. Best angle (Vx) is the IAS where there is the most excess of thrust avail over thrust reqd.
This is not the same as, but is close to the bottom of the drag curve, i.e min power reqd. (TAS)
Therefore green dot is close to max endurance.
Before anyone shoots me down, I've had a couple of gins!
