That is possible, but I am not aware of any particular influence by one on the other. Teilhard de Chardin wrote his book in 1959. CS Lewis died in 1963. There was some overlap, but not a lot. What I think is more probable is that both thought about the nature of faith and how it has to be constantly challenged and re-examined to grow and remain robust. When we look at today’s fundamentalist Christians in particular, they blindly follow an uncritical acceptance of the inerrancy of the Bible, which demonstrates that their faith is shallow. Many of them suddenly abandon their faith when they begin to examine their beliefs. This is demonstrated in the rather substantial decline in mainstream churches in recent decades. Having no understanding of the divine, the average Christian is ill equipped to do the internal work necessary to understand the universe, God and their place in it. Both CS Lewis and Teilhard de Chardin were a lot more thoughtful. They are very different than the average Christian. It’s no surprise that they would come to similar understandings with each other.