24C- Alt Text for Images in Campaign Email Editor

The accessibility tool which business stakeholders uses is NVDA tool which has Speech Viewer feature as well.

The feature has been tested in 24C instance. The 'ALT text' which has been added while configuration is getting fetched in NVDA screen reader tool. But along with that it also reads the structure of email which is nothing but rows, columns, spacing between lines in inches. Please refer below snippet.

Can you guide how can we only have subject line and message content or message body fetched in screen reader, so that we will have best end user experience and only required information will get fetched in screen reader. Please let me know if any other details are required.