I mean... I'm honestly not sure because I indeed don't think about it, but I really don't think so?
Like, okay, let's take a random sentence:
"C'est impossible!"
There's a bunch of different ways you can pronounce it: you can pronounce all syllables in one breath (no accent), you can enunciate three syllables for heavy emphasis ("C'est im, po, ssible!"), you can put the accent on the first syllable for light emphasis ("C'est IMpossible"), but you're almost never going to put the accent on the last syllable ("C'est impoSSIBLE!") unless you're doing a bit.
Like, okay, let's take a random sentence:
"C'est impossible!"
There's a bunch of different ways you can pronounce it: you can pronounce all syllables in one breath (no accent), you can enunciate three syllables for heavy emphasis ("C'est im, po, ssible!"), you can put the accent on the first syllable for light emphasis ("C'est IMpossible"), but you're almost never going to put the accent on the last syllable ("C'est impoSSIBLE!") unless you're doing a bit.