The lifetime of a shopper session is determined by several factors, which can be configured in your Adobe Commerce Admin. See Configure the cookie lifetime for more information.
The configured lifetime of cookies can affect your Quick Checkout if:
If a shopper places an order when their Bolt session expires, the order is successfully placed but the user is logged out from both networks.
If the user is still active after a successful checkout, they will not be logged out from both Adobe Commerce and Bolt.