Originally Posted by Mirad
I'd like to think that there would be more zombies near the church especially with the recorded bells going off on a timer as well. The zombie heard the blond girl fumbling with the pistol parts and that wasn't as loud as the church bells recording.
Keep in mind that because the bells sounded like a rolling peel rather than numbered chimes, they probably only ring on Sunday mornings and possibly Wednesday afternoons, rather than on the hour, every hour. This would give the zombies plenty of time to disperse, or perhaps grouped them into a large, looping school. This would explain the large group seen on the highway, which might be constantly walking in an orbit between timed sounds.