Question

@Vincent-Lyon.Fr
y a-t-il différence de la prononciation entre "Je l'ai chanté" et "Je les chantais"?

Answer 1

Si non, comment peut-on les distinguer?

Answer 2

Teoretically yes:
chanter, chanté, chantai are pronounced [e]
chantais is pronounced [ɛ]

Answer 3

"Theoretically" means it's not true in real life?

Answer 4

What I mean is that even people with higher education will not necessarily make a difference.
But a classical actor will. This appposition between [e] and [ɛ] is gradually fading.

There is no way in distinguishing between your 2 sentences with most speakers nowadays.

Answer 5

Ah, je vois, je vois.

Answer 6

Merci pour ton information :)