Let me rephrase my apparent poor choice of words then so they may withstand your meticulous critisism. We try and have a 1st century traditional Jewish passover seder. Its patterned after the one Jesus celebrated for probably about 33 years.
I understand you completely, and I am not criticising you for it.
I am instead, making a point about how others look at Catholic claims to have things "understood" among us and to have "overriding themes" to the things we say or do.
SD