So, prior to the new canon law, its legal?
No, for example when in 1718 a bishop of Utrecht was ordained without a papal mandate both the consecrating bishop and the bishop being consecrated were excommunicated.
Pretty sure you're talking about a suspect heretic, but not a bishop in good standing with the Church like Archbishop Lefevbre was. If you're talking about the "Old catholic" stuff, then clearly, there were OTHER problems, not just the fact that a bishop was made without "a papal mandate."
They ceased to be in good standing with the Catholci Church when they had the episcopal ordination without the papal mandate.
Again, you fail to see that there were other problems with the "old catholic" church. There were. Go look it up. They denied certain tenants of the Faith.
Can you even name one thing that Archbishop Lefevbre denied that was a dogmatic part of the Faith? No, you can't. Because he didn't deny anything.
Having read about the history of the "old catholics," there were a multitude of problems, and the fact that they rejected papal authority entirely. They were considered "schismatic" at that time, but not in heresy. Denying the authority of the Pope was something that Archbishop Lefevbre NEVER ONCE DID.
You're comparing apples and oranges here, poche.