I asked Bishop Williamson to conditionally confirm me right before I entered the Seminary ... without having done ANY investigation whatsoever, and His Excellency was happy to oblige.
At the seminary, when the subject came up, I left it completely to their discretion. I stated simply and factually the circuмstances of my Confirmation (the local Novus Ordo Bishop, using the old Rite in Latin, under auspices of Institute of Christ the King) and they decided to have me conditionally confirmed by +Williamson.