It may create confusion while crawling and chances of giving a negative impact while ranking. According to the latest Google algorithm, it uses the semantic way of indexing while crawling through the content.
Each header tags will have its importance in SEO. H1 stands on top among all the header tags. Knowing H1 stands on top and imposing more H1’s on a page to make us stand on top is a wrong assumption. It’s better to avoid multiple H1 tags on a single page. We recommend only one H1 to highlight our headline for the main content on a single page. If required, you can use other header tags with different order to differentiate your content and subheadings.