The Giuseppe Meazza Stadium (Italian pronunciation: (duzppe meattsa)), commonly known as San Siro, is a football stadium in the San Siro district of Milan, Italy, which is the home of A.C. Milan and Inter Milan. It has a seating capacity of 80,018, making it one of the largest stadiums in Europe, and the largest in Italy.

Can we conclude that do ac milan and inter milan share the same stadium?
yes