Duke 2.6
In my " simplified " explanation earlier, I just tried to convey a message to " the people ", as to what can be expected from an O2 sensor.
Of course the cross-count timing is exaggerated, but the principle of " healthy " vs. " lazy " sensor activity should be understood.
Btw, the average DVOM is only averaging the voltage output readings from the sensor, so while it may show activity, it is not necessarily " real time " information.