They didn't get to be a JW in 2 minutes, so it's hard to imagine undoing that level of indoctrination in such a short time. It took me over 6 years to wake up after I was exposed to TTATT, and everybody's different.
That being said, you can make a sizable dent in 2 minutes, even one well chosen sentence. Maybe not an immediate life-changer, but something that will stick with them and maybe "bear fruit" later. (Sorry for the subconscious JW-ism.)