Vucinic made the last pass, not Vidal. But neither Mirko got an assist because Bonera got to the ball first and it was from Bonera's clearance that Marchisio scored.
Btw, for the 2nd goal everything that Vidal did was brilliant. First that crazy header, then he immediately stands up, runs back, sees that Claudio is about to shoot and
in the end he dives