Our Qt6Config.cmake file limits on purpose the component search to the current Qt6/.. dir location using the NO_DEFAULT_PATH.
This means that even if CMAKE_PREFIX_PATH is set to point to wherever Conan installed NetworkAuth, find_package(Qt6 COMPONENTS NetworkAuth) will report NetworkAuth is not found.
A workaround is to call find_package(Qt6NetworkAuth) directly which would pick it up from CMAKE_PREFIX_PATH, bypassing the Qt6Config file.
In such a case the dependencies need to be explicitly specified as well, which means that the working workaround code would be
Figure out why we limit the dir path and we if can disable it, or augment it with some additional variable where to look for packages.
I suspect we limit it to, to ensure we don't pick up distro system CMake packages.