Co-Channel Contention (CCC) explained with simple drawings

I came across some documentation I have made and I was explaining how Co-Channel Contention can have a bad impact on airtime using simple drawing.
I thought I might as well share these diagrams with you! I have included the PDF and Microsoft Visio version so you guys can change the colours if you would like.

ccc_explained_with_diagrams.pdf

Enjoy!