Every new fossil that's found creates two new "gaps" that the C's can point to... And Piltdown Man, discovered 1912, was a fake. (So true, and it always will be.) And no fossil has been found morphing into anything else. (So true, they all just lay there.)
Pretty much. If you have A & C, they'll ask you where B is. Find B, and they'll ask you for the things that come between A & B, and B & C. Find those, and they'll ask you...
Expect to be arguing about "transitionals" unto the end of time ;)