Everything's been evolving for the same amount of time, and 99% of it is bacteria, fungi, plants, and protists. To characterize evolution in terms of "neural complexity" when nearly all life lacks a nervous system seems pretty misguided.
Everything's been evolving for the same amount of time, and 10% of it is the same initial protoplasm that appeared in some abiogenetic anomaly then experienced growth which fattened it up enough to split into more and more separate pieces.
The nervous system than developed from this growth, development, and maturity of that sole initial appearance of life is still alive, having merely shed worn out parts and rejuvenate itself through mitosis and miosis processes.
What Teilhard saw as Omega Point was the apparent directed evolution which seeks a more complicit relationship with Reality, one which will better guarantee the continued existence of this singular Life on earth by means of intelligent adaptation to the environment of the planet.
In the concept of Gia, man can look at his own appearance as the beginning of an end point to the meaning of Life, i.e.; survival.