I realize there are probably numerous threads on talking in church, but this may be a little different.
My 1962 missal poses the question in its examination of conscience, giving a clear implication that it is a sin.
I’m working with my son in preparation for his first confession and communion using The New Saint Joseph First Communion Catechism. It also mentions the “talking in church” issue in its examination of conscience. I think this book does have an imprimatur.
A Catholic coloring book I bought for my son has a page with a picture of a church, underneath is written something to the effect of “We should not laugh or talk unnecessarily in God’s house.”
Why is this very basic teaching not being reinforced in parishes? Why does it seem like the older folks, who probably grew up under this “regime”, have seemingly forgotten the importance of silence in the church?