Do pro players do this in scrims?

Purposely give 1v2, 2v4, 3v5 e.t.c scenarios to their teammates and try to build their thought process in these types of situations and also try to build synergy with a teammate such good that you dont have to countdown 123 and then do a peek e.t.c? Because I know some teams who countdown 123 and then do double peek and gets messed up

they are in ghostmode half the time

Do they do this in scrims? Mostly not. Scrims are to practice overall game sense, mid round calling, executes etc. in practice by themselves they might do this tho.

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i can see teams doing that once or twice with the coach guiding them but i dont think its something they always do