XSS was activated but Chrome did not show up. What was happening exactly?

The XSS auditor can be activated even if its payload does not work, and sometimes even if there is no XSS vulnerability.

The XSS auditor only looks at the request parameters to verify if there is a match with a part of the response.

To understand why your payload does not work, disable the XSS auditor and look at the HTML source / developer console.