Thanks for reaching out! I don't believe there is effectively any difference between 1 page and immediately.
And, again it might be worthwhile to just test it out, my understanding is that it would count any page on the domain in the "after viewing", of course if you've limited the pages that it can be shown on, it would not show on any pages that you have specified that it should not.
I will do a bit more digging in with one of my developers here and get more concrete answers for you. Stay tuned!