Imagine a church before a wedding.   2  members of the groom's family are waiting in the sacristy for the not-yet-arrived groom and his chum--formally the 'best man'--to "get him to the church on time". The celebrant priest departs briefly to check on some arrangements. While waiting by themselves, 1 family member tells the other [....]
1) The testimony of 2--5 people asserting + CDM  [...] +DCM said " The  There is no Pope"
vs
2) Audio recording of him saying the opposite.
You're haggling over the number of witnesses available from a
traditional Catholic family? So add in cousins if need be, and we can count
2--5 male family members waiting in the sacristy, all attentive listeners, and all unequipped with audio recorders. And maybe, years later, 'twas the once-snot-nosed ring-bearing brat who ratted, and the family men present back then, remembering the conversations in the sacristy well enough, declined to cover up the well-earned--but unflattering--comments about the bride from 1--or
more--of their members.
Same day. Same event.
Perhaps it's done differently in countries outside the U.S.A., but weddings and their receptions here are "
same day". The reception is practically a continuation of the wedding itself: Same principals, pretty much the same guests, altho' sometimes with intervening vehicular travel to a near-by venue.