What is the connection between elephants and illusion and astrology?

I can think of three explanations from here.

First, in ancient times, some people may have used ivory for divination, and elephants naturally became the spokesmen of mysterious things.

Secondly, for a while, the simplified characters of images may play a certain role in this phenomenon.

Third, you can think the other way around. Maybe elephants have nothing to do with divinatory symbols. At first, people only used elephants to represent mysterious things. Later, people saw elephants. Wow! So big. So people call it an elephant. . . ——!