How can I pass the bathroom part in the mission "Enter the Bank" undetected?

I get in the bathroom through the window, but when the Iranian came in it said press O, then he says NOW and it says press R1 but I just can't pass this part. I've tried hitting both constantly, then O first then R1 then I try leaving both pressed. I don't know what else to do; I've try many things and nothing seems to be working.

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1 Answer

Hold, don't tap, circle. When he says now, tap R1.