The directions tell us that the narrator has a typical accent from Marseille. I had no problem understanding him, with the exception of the final phrase: "surtout quand on joue contre Paris." With the liaison, the word "on" sounds like "tous/tout" or even possibly "tu" but certainly not the standard pronunciation of "on". I wanted to write "on" since that made more sense, but went with "tous", which of course was wrong. (I knew that if I wrote "on" and it was correct, that I would be less likely to remember than if I wrote the wrong word.)

My question: Was this a mispronunciation of "on" or is this an example of the Marseille accent?

Merci