You could simply add a link to Quiz 2 in the 'Overall feedback'. Make a big button to make that obvious:
<div style="text-align:center;padding:20px;"> <a href="https://--your domain--/mod/quiz/view.php?id=--quiz 2 no--" target="_blank"> <button type="button" style="height:100px;font-size:24px;">Click here to access Quiz 2</button> </a> </div>
It would look like this:
Notes:
- The button will not appear in the gradebook.
- In the quiz settings and under Review options, select 'Overall feedback' under 'Immediately after the attempt'. Deselect 'Overall feedback' under 'Later, while the quiz is still open' and 'After the quiz is closed'.