What I wouldn't do is hop out of a running R44 at Epsom on Derby Day in front of a senior CAA man to have a chinwag with my mate in the next door (also running) helicopter!
Think you may have misread the sit MBJ. We landed next to said gent - and one of us got out to ask him why he thought he could change into his morning suit whilst leaving his heli with engine and rotors running. (Have posted elsewhere on this.)
Once CAA approached he de-selected the clutch from outside the heli and waited for the engine revs to rocket until pulling the mix control. All done with his feet on terra firma and CAA watching.
He was no mate of ours!