Neither can I, because you've got this completely backwards, because you're knee-jerking a need to defend the indefensible.
These counters reset when the triggering condition occurs. The only way for "days since A followed the rules" to result in a "0" is if they followed the rules that day, and reset the counter. If he broke the rules, the timer would continue counting up, since he's not following the rules and thus not resetting the counter.
The operative word is "since", and you're ignoring it completely, in your desperate need to defend whatever stupid mistake a Republican made.