Does test line eventually get darker than the control line?

lo

This is my first pregnancy.. so of course it’s my first ever positive pregnancy test (or 5 I can’t help myself)

My first test I took when I was 2 days late for AF the control line was the same colour as the test line, I’ve also done 2 digitalis which have obviously come back pregnant.

What I would like to know is.. is this normal? The test line is INSANELY dark and the control line barley noticeable (I’m now 5w2d)