Answer:
There are some conflicting (plot) lines. If you mean plot as some sort of scenario or sequence of events- as in the Plot of a story or play- well... different churches and temples have differing ritual requirements for Requiem Masses for the dead- for example, in the Catholic Church, there are certain traditions that the Closest next of kin follow the casket into the church- this being the office of the Principal Mourner. ( I did this for Mother last Year) So in that sense the plot or rituals vary quite a bit. The church generally avoids funeral masses on sundays, primarily for traffic-control reasons, they have regularily scheduled worship services- and a hearse out front, would, so to speak, disrupt traffic. as to plot in the cemetery sense- these are owned by the cemetery.Only rarely ( it may violate anti-trust laws- are funeral homes and cemeteries under the same managerial roof! These things need not be shrouded in mystery. I hope this has been of help.