i just want some clarification on this bullet point in https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/no-unnecessary-condition.md .

Base values of optional chain expressions

does that mean it will only check the first value in a chain?
e.g. foo?.bar
or will it continue to check down the chain but stop at qux?
e.g. foo?.bar?.baz?.qux