Hi Justin_Doh,
There's really no way to do that if you're using unique survey links for each respondent. Qualtrics (and every other online survey platform I've used) only allow one email (and email invitation) per respondent link.
As a workaround, you could send out your survey to the primary distribution list, download the distribution history, and use the survey links in a second message that you could send to managers as a fake "cc" message.

Thank you for your feedback. Appreciated.
Is there way for community users to ask Qualtrics whether that functionality can be implemented to the software?

Yes, go to the Product Ideas tab.

Justin_Doh , if you are asking for feature request then check this post - https://www.qualtrics.com/community/discussion/6617/product-ideas-community-feature

Sorry. How do I check the post?
Are you referring to checking "Yes" or Upvote?