Yes, I think to work well the Land zoning and transport planning need to be hand in hand.
(and ideally serve people rather than car companies).
A local bus service is more efficient the denser the population it serves.
Rural densities will struggle to support/ warrant frequent bus services.
Really dense areas will more easily support more frequent bus services / netwoks and even trains / grade separated or exclusive land use for public transport.
It's no suprise that super dense places like Japan, Singapore, and desely populated European , Chinese regions have more public transport.
Add New York City to that list for that matter. Presumably NYC benefited from achieving it's density before cars became too powerful politically..