Shaun of the Dead -- One Take Shot

One of my favorite things about Shaun of the dead was the two, one take shots that they do in the first act of the film to show that change in Shaun's environment.

To start it's best to say that these shots are parallel to each other. In film this normally means that two scenes/shots/situation relate to each other and will be seen in different parts of the film. The best example of this would in both Star Wars Ep 5 & 6. Luke gets his hand cut off by Vader leading to his eventual fall, Paralleled by Luke cutting Vaders arm off but realizing what he's doing stops.

Here's a link to that scene: https://youtu.be/YZ_j3s5xj8I?t=135

Now Parallels can be very subtle things, but I want to focus on Shaun of the Dead's scene because it's also a good example of a One Take scene, that being a whole sequence shot in one take. This is an effective parallel because we two key point, how repetitive and mundane Shaun's life is and the change to the environment.
Having the scene be one take shows this really well, to start we can see that Shaun is so used to his life he doesn't see clear change around him, as he walks down the road he doesn't see the bodies by door steps or zombified beggar on the road which adds a layer of visual comedy. But this also works for the parallel too as the audience will laugh at this walk because its similar to what they go through everyday while going to the shop too and seeing the parallel just show the audience nice little details that Shaun is missing because he's used to meeting them day in and day out. For example Shaun trips over the same bit on the pavement on both occasions but a keen eye will notice that on day 1 the man is washing the windscreen of the car, where as day 2 the same part of the windscreen has a hole in.
And I think this is why the one take works so well, is because its allows the audience to receive information about not just the character and him not being aware but the little details that would be removed if it wasn't a one shot.

Here's the clip in very low quality (Sorry)
https://www.youtube.com/watch?v=MpkQPJ5w1o8