Look at the Bangor advert...

Notice what?

How unrelated the animation is to Psychology?

Seriously? Is it just me? Action potentials only fire in one direction.

Surely I can't be the only one to notice it...?

Perhaps the animation is attempting to show something beyond the simplistic A-level conception of neuronal communication?

Looking at the advert is appears a rather electrical mechanism? Is it actually representing the classical chemical synapse?

lol, in sum - does it actually show what you think it does?

I've honestly no idea exactly what it is meant to actually represent. It might conflict with what you currently know, but neuronal communication can be bidirectional (it is not limited to the unidirectional AP found with chemical synapses). This would be somewhat beyond A-level psychology, though.

Well, effective education predominately involves challenging current beliefs/knowledge, so maybe they have done a good job. Or maybe it was merely the imagination of some marketing bod.

Anyway, you might want to read up on the differences between chemical and electrical synapses. The electrical synapse can involve bidirectional flow of information across the gap junctions (whereas the chemical synapse is unidirectional).