United States is strengthening military relations with Bangladesh

[Basel]

Not exactly as simple as you make it to be dude.

Vast majority of China's population resides on or near the South and East Coasts.
Let us look at the map below and distances from say Shanghai to Gwadar and Shanghai to
Arakan:

View attachment 500949

View attachment 500950

As you can see the distance using CPEC is twice as long by road and rail as the one using Arakan.
Sea transportation will always be much cheaper than that using road and rail and so Chinese will try to avoid sending too much using the CPEC route.
CPEC was created to beef up Pakistan(vis-a-vis India) and also to give a 3rd option after Malacca and Arakan to transport Chinese goods and services to and from Europe, ME and Africa.

Its not about distance inside China from Pakistan that matters, more important is to get good inside Chinese border ASAP which CPEC provide very well.