The incapacitation exercise in the sim implies wearing headsets as the instructor uses the intercom to ask one of the pilots to go silent without the other one hearing it. Which was all well and good before the age of Miss Rona, when many training centres started discouraging sim users from wearing the headsets or donning the oxygen masks in the sim, citing hygiene.
In real operations, what is ever so slightly concerning is that some outfits only do the bare minimum of 8 legs of line training with a safety pilot - and that safety pilot will be released afterwards unless the performance of the trainee is absolutely dire. And, in many cases, that's a bit premature as a newbie is highly unlikely to get reasonably confident with only 8 legs and 4 to 5 landings as PF at best. Hence, they will be under far greater stress and far more likely to run into trouble, should the Captain go silent on leg number 9. I would say that raising the minimum requirements for safety pilot release to something like 20 legs, at least 10 of which as PF, and no input on the controls from the instructor on the last 3 consecutive landings would make sense. But here comes the main issue, namely that many bean counters consider any training surplus to the legal minimum a waste of productivity...