Does nginx have the ability to open multiple threads in a proxy situation when connecting to the origin server? For example, say I have a site hosted in the US with a large file, say 500MB.

A proxy cache is in tokyo, where the end-user is. Can nginx open multiple threads when downloading that 500MB file from the US, which would theoretically allow the uplink to be maxed (or very close) and serve the file faster to the user, even though its not actually cached (yet)?