But all right, Mijnheer van Gennip, you want to be a slim jannie --and
in English too! So show us how you would design an amplfier either
Class A or with substantial Class A output (i.e. Class AB) in which
"the output device(s)never cease conducting under any signal
condition". Note the important qualification "under any signal
condition". That means exactly what it says in plain English: you
design the amplifier, I choose the signal level to be vastly larger
than the specified bias, then you prove it still operates in Class A.

So, drive the amplifier outside its design parameters? It sounds like you
are parsing semantics here. In a formal debate, one might lose points for
failing to say "the output device(s)never cease conducting under any signal
condition /within its rated parameters/". But in a newsgroup, it isn't often
clear when the formal rules are switched on or off. It seems people
arbitrarily like to switch them on and off for their own benefit.