Called correctly, offsetting.I don't know, @TerryP. "Substituting process" is quite vague. Likely the reason it wasn't called on the field (And/or why it's hard to recall the rule ever being invoked).
And my 2nd point remains - 12 players aren't allowed under ANY circumstances. No fine print needed
The mention of a running back passing as a counterpoint has what to do with substitute process? These examples as counters don't.
The officials either didn't know or missed the infraction.
Saban didn't, as well as others.