Does the OVI lead the medium term market timer (indicator) or lag it, or neither?

Does the OVI lead the medium term market timer (indicator) or lag it, or neither?

The Medium Term Market Timer is specific to the S&P500 index, but will also have relevance to individual stocks, particularly of course those which are S&P 500 constituents.

It is independent of the OVI, but we are using it in the way by which it has been tested and the way Guy describes.  

Its optimal use is where it is either oversold or persistently positive but not overbought, together with an individual stock exhibiting bullish OVI and other characteristics fitting our method.

Find more info about the OVI Market Timers here