Well, you got it right in the end. You forgot to mention that the film was made post-1965 though.

Well, you got it right in the end. You forgot to mention that the film was made post-1965 though.
Haha, my thoughts exactly. Anyhow, it seems this goes nowhere so allow me to reveal the title:
A movie resembling Ladri di biciclette (1948) is shown on TV, but the real-life world gets muddled with the film and the TV commercials.