Suggestion: clarify in Combobox section that the contained listbox does not require its own label #2290
Description
This is already documented in listbox:
If the element with role listbox is not part of another widget, such as a combobox, then it has either a visible label referenced by aria-labelledby or a value specified for aria-label.
However, I think it would be an improvement to also specify in the combobox pattern that the listbox does not require a separate label (assuming the combobox element has one), for extra clarity.