If two modules implementing two separate hooks ended up with functions with the same name, could that cause a conflict or problem?

### a.module

    /**
     * Implements hook_a_b().
     */
    function a_a_b() {}
    
### b.module

    /**
     * Implements hook_b().
     */
    function b_b() {}
    
### c.module

    /**
     * Implements hook_a_b().
     */
    function c_a_b() {}

### c_a.module

    /**
     * Implements hook_b().
     */
    function c_a_b() {}

Does the scoping prevent that from causing a problem, even though the functions have the same names?

What happens if two modules declare the same hooks, even though they follow the naming scheme and the hook names contain the module names?

### a.module

    /**
     * Implements hook_a_b_c().
     */
    function a_a_b_c() {}

### a_b.module

    /**
     * Implements hook_a_b_c().
     */
    function a_b_a_b_c() {}

### x.module

    /**
     * Implements hook_a_b_c().
     *
     * It's not clear which of the two hooks this actually implements.
     */
    function x_a_b_c() {}