What I'm saying is that I am personally aware of several cases from the late 1980s and early 1990s where no "investigation" was done before performing conditional ordinations.
You would have been in the best place to judge, but sometimes an investigation might have simply been the NO priest phoning the seminary, speaking with Bishop Williamson and explaining "Bishop Martin Luther Jr ordained me at the local circus". Response: "Lad, set up the chapel again". It would be interesting to hear BW's explanation. After all, Archbishop Lefebvre made it clear that in cases where there is no doubt, it is a sacrilege to "repeat" the ordination. There is no way that BW ever held the new rite to be automatically invalid. Agree?