This book says (pgs. 46-47):
Do not greet your acquaintances in church, much less hold conversation with them there. Do not be offended if your friends, holding the church more sacred than yourself, take little or no notice of your courtesies...
Show no human respect whatever in the choir, in the galleries, or in any part of the church, in regard to any of the above mentioned matters...
Standing and holding conversation in the parts adjoining the church, such as in the porch of the church or in the passages, is a great abuse of the sacred edifice of God.
Is this how it is in all the SSPX and traditionalist churches?