Gripe about funnels

Just a small gripe, I try not to do much complaining these days.
So I define a funnel as a point where you cannot pass the zombies blocking the way of a narrow passage. In some cases, not all, zombies can go straight through but my survivors can not. Am I missing something? What determines this specific and somewhat rare situation? In other instances the zombies behind the plug patiently wait their turn to feast on your brains. They will mosey around behind the blocked path until you kill the one blocking the way.
Also 1 turn struggle spiked walkers. It just kills. I dont like it but accept it.
Feel free to comment. Again just an annoyance more than anything.
So I define a funnel as a point where you cannot pass the zombies blocking the way of a narrow passage. In some cases, not all, zombies can go straight through but my survivors can not. Am I missing something? What determines this specific and somewhat rare situation? In other instances the zombies behind the plug patiently wait their turn to feast on your brains. They will mosey around behind the blocked path until you kill the one blocking the way.
Also 1 turn struggle spiked walkers. It just kills. I dont like it but accept it.
Feel free to comment. Again just an annoyance more than anything.
-1
Comments
It's kind of 2 teams, where each lets only the "teammates" pass.