Counting time and RVs by the Society's standard would mean not counting break time and not counting an RV unless you talk to the same person on the return call and 'advance' the truth somewhat. I doubt that many jws adhere to such standards, however. Over the years I have noticed many taking long breaks (once, up to an hour) and also noticed pioneers who spent a good part of the day running errands and taking breaks.
I could never blame them. If I had to find a way to put 90 (now 70) months in "real" service in each month, I would have never been able to do it, and I doubt that many pioneers can either, given the nature of the work. Also, for many jws, including myself, the coffee break is often the highlight of the morning in service.
I also think about secular employment in comparison - when you take a break, you still get paid for that break, unless it's your lunch break (in many cases). I could never understand why the Society did not want jws to count break time. I guess they figure the bros and sis's would do what would probably come natural - spend the better part of the service period on break.