How to fire custom JavaScript on Guided Intercept display and accept events?

Hi Everyone,
                                                                                                                                                                                   
We're planning to use a Guided Intercept with an invitation screen ("Display survey directly in the dialog" disabled). We need to fire custom JavaScript when:                                     

1. The invitation screen is displayed to the user     
2.  The user clicks accept to start the survey                                                                                                                                                

This is for sending tracking events to Adobe Analytics via our tag manager (Tealium). Specifically, we want to track "survey seen" and "survey started" as separate AA events when the invitation is shown and accepted respectively.
 

We looked for Action Sets or JavaScript hooks in the Guided Intercept editor but couldn't find any options to attach custom JavaScript to these intercept events.

 
So wanted to check — does Qualtrics expose any JavaScript events or callbacks on the host page when a Guided Intercept is displayed or accepted? (e.g., QSI API events or DOM events we can listen for)

 
We'd like to avoid switching to a Code-Based Intercept since we'd have to rebuild the entire invitation UI and dismiss behavior.

 
Thank you for helping with this.