I would say it is everything you do after your workout that matters with the assumption being you are working out hard enough and briefly enough to stimulate muscular growth.
All this ‘intra workout’ crap that people are doing is, in my humble opinion, a waste of time and money and may in fact have a negative impact on your workouts by creating an unnecessary burden on your body (think digestion).
But try convincing all those product shills, the coaches with the kick-backs, all the gullible bodybuilders who are capable of doing and trying just about anything and everything, dangerous or not, productive or not, while most if not all these products are nothing more nor less than than expensive fool’s errand at best, all the while padding the product manufactures wallets. Well you say . . . Mr. so and so contest winner does it does it then it must be good . . . sure. Or look at him; I want to look like him so I will do what he does. Well, good luck.
Now . . . they may be necessary, even ‘probably’ necessary if you are 300lbs of solid muscle and working out for 2 - 3 hours a day, maybe twice a day. And at this point in time, to the best of my knowledge, we don’t have any members like that, not that it matters, but at least you would be hearing it from the horses mouth instead of from the other end.