No, HEAT is their only "common screen" film so far. Yet in GF (part II if I remember well) there is a special FX to put them both on screen. It is one of the scenes that fades from Michael present day to Vito young adult in New York. You can see the picture HERE
"Come heavy or not at all." Uncle Junior to Tony S. "Nenti dire ca nenti si capi" come disse quello. (Say nthg when U know nthg.) "Chi non ci vuole stare, se ne vada." (If U don't like it here, go somewhere else.)
