[aur-general] PKGBUILD: depends vs. makedepends and namcap warning

Dear AUR list, simple question about dependencies in PKGBUILDs: Package A provides some header files and build scripts. Package B provides additional headers, and their usage only work out if A's headers are in place. Additionaly, package B can only be compiled using A's build scripts. 1) Is it correct to have package A in B's depends AND makedepends arrays? 2) Am I supposed to ignore namcap's warning 'Dependency included and not neede' because it doesn't take header dependencies into account? Thanks in advance for clarification, Lukas