How is Darktable added to Gimp 2.10.22?

[Kuen]

My computer : Desktop, Windows 10 home 64b. V.20H4
My Camera : Sony 7 mark II
My Lenses :  All vintage primes.  No auto lens.
Image File :  All ways shoot RAW files.

I plan to save money for buying new gears. Therefore, want to use Gimp. 
First time to touch Gimp.  Cannot open RAW files.  Message advising to install Darktable.
My question: Does Gimp pick only the RAW editing function from Darktable  or install the whole Darktable?
Thanks.
Kuen