Make it clear which text is the main title for the page. Google looks at various sources when creating title links, including the main visual title, heading elements, and other large and prominent text, and it can be confusing if multiple headings carry the same visual weight and prominence. Consider ensuring that your main title is distinctive from other text on a page and stands out as being the most prominent on the page (for example, using a larger font, putting the title text in the first visible element on the page, etc).