Benediction is a formative experience, whether we bless others or receive a blessing from them. It comes in the form of an inner or outer word or gesture arising from a loving heart. In blessing we express gratitude to God for the divine inherent in other persons. We ask God in effect to bring this form to its fullness.
On the surface, silence was simple: we didn't speak unless it was necessary. But what was the point of silence? The point was, we learned, not mere silence, not silence to preserve some sort of order, but something much greater. In silence the idea was to recollect ourselves, to place ourselves more squarely in the presence of God than we would if people were talking to us all the time. We could pray, we could meditate, we could contemplate.