I think there is an argument for repeated commands that falls well short of being caught in a loop. As referenced, we want to establish that we have issued the commands for witnesses and recording devices. More importantly, however, suspects may have some degree of auditory exclusion or simply not hear or understand us due to environmental conditions, poor hearing, or language barriers. (Of course, the way to make anyone understand English is to keep repeating what was said louder.
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I don't think there is an absolute number of commands that should be mandated (which would be pretty foolish) and I think if the suspect has not obeyed the first several commands, he or she is unlikely to obey the next ten or twenty. I also think there are times to take action without warning or after a single command.
On one occasion, on of my shift mates was dealing with a disruptive and annoying handcuffed prisoner who was, however, not resistive or assaultive. When he told the prisoner to "Quiet down! I'm not going to tell you again!", I immediately commented "Yes, you are." The officer considere that for a moment and then remarked "Yeah, you're right, Sarge. I guess I am."