Confusion in CDN transmit time numerical?

[shivajikobardan]

please google this​

"How does a CDN improve load times?-cloudflare"​

I can't share the link here.



It says-:

“1500ms: The five assets are delivered asynchronously to the client from the origin server in Singapore.”

1 response takes 250ms, then 5 responses should be taking 1250ms.
And

“800ms: The five assets are delivered asynchronously to the client from the edge server.”

1 response takes 50ms then 5 responses should be taking 250ms.

Can anyone explain what’s going on here? Are these values randomly picked. If randomly picked, why were they randomly picked? I think there is some math. My best bet is that the answer lies in the word “asynchronous”. But I am not sure.