Lightning is getting brighter and thunder is getting louder and louder. Why lightning first and then thunder?

For this topic, there was a joke at that time: lightning first and then thunder, because the eyes are in front of the ears.

In fact, this is just a physical problem:

First of all,

Lightning: It's vision, what you see.

Thunder: It's hearing, it's what you hear.

Analysis in physics,

The speed of light and sound, light travels faster than sound.

So, I will see the lightning first, and then hear the thunder.

I wonder if you can understand this explanation.