When benching on a cup of wine and a separate cup of wine is passed around for sheva brachot, do you make Boreh Priy Hagafen on each cup or only on the one used for Birchat Hamazon?

The fact that one passes round a second cup for the Sheva Brachot does not require one to make another Bracha - the Bracha said by the Mezmen is enough for all those who want to drink (as long as they have Kavana when the Mezamen makes the Bracha). Rabbi Yosef Weitzen