@CaitT For the record - and thanks for the suggestion - this information has been added to survey FAQs:
09/27/2022
Explain the “timeout” function for survey takers.
Survey Kiosk: The timeout for a user taking a survey from a Kiosk site will occur after 30 seconds of inactivity and these responses are not autosaved. The client login page will display once the page is refreshed.
Dashboard: The timeout for a user taking a survey from their Glint dashboard will occur after 30 minutes of inactivity. After 20 minutes of inactivity, a pop-up dialog box will alert the user to the impending survey expiration. Responses are autosaved for users taking their survey from a Glint dashboard.