No. Chrome has supported notifications even when you have no browser windows open since Chrome 42, released mid 2015. <a href="https:&#x2F;&#x2F;developers.google.com&#x2F;web&#x2F;fundamentals&#x2F;getting-started&#x2F;push-notifications&#x2F;?hl=en" rel="nofollow">https:&#x2F;&#x2F;developers.google.com&#x2F;web&#x2F;fundamentals&#x2F;getting-start...</a>