When using your browser, you’ll notice a timer in the right-hand corner of your screen. This timer, set for an hour, counts down the period of inactivity during your browsing session.
When capturing content, the inactivity countdown pauses to allow the expander to scroll through and complete the capture process. As long as you see the (Paused) message, it is safe to assume the capture is still running. 
Once your browser detects no activity, the countdown resumes. When the countdown reaches zero due to an hour of inactivity, your session will disconnect.