Heard one instructor telling his student to brief him on his actions in event of go-around on short final, brief him on go-around at 50 feet crossing the fence, brief on go around after a bounced landing and brief him on a go around at the flare. All this was to be briefed on the downwind leg before each landing. The student was forced to extend downwind to cover all the talking. The instructor should have been sacked for ripping off the students flying time and sacked for being so incompetent.