Bonjour Cécile,
In the first A1 Listening Practice exercise, Liz asked whether run-on sentences are acceptable in French. Michael explained what they are. You asked Liz for an example, which wasn't given there.
The 4th and 7th sentences in this exercise are good examples.
I have seen so many of them throughout the exercises that I can only conclude they must be acceptable in French.
Still, confirmation of that fact would be welcome.