wget bandwidth usage

[Stephen Adams]

Hello All,

Thank you for your work on wget. My apologies if this isn't the place to
ask a generic question. For background, I'm using wget 1.19.4 on Ubuntu
18.04.5

I'm curious about wget's usage of the bandwidth available to it.
Specifically:
1 - does it use the entire pipe available?
2 - does it "monitor" how much bandwidth is available during a download and
adjust it's usage accordingly? Meaning I guess, does it share the bandwidth
with other programs or other instances of wget that might start up during a
wget download?
3 - would one expect different download performance if multiple instances
of wget were running simultaneously?
For example would
   "wget file1 &; wget file2 &; wget file3;"
download all 3 files in the same time as
   "wget file1; wget file2; wget file3;"
would sequentially?

Thanks for any insights you can give!

Steve