Quote from WarEagle:
Without speaking for no_pm, my take on it is that he is not looking for measuring the length of the trend per se, but rather that a trend is in effect (i.e. ADX > 30 or whatever), and it takes awhile for ADX to move above 30 once the trend starts, so in that regard it is now "established". The trade from the previous journal was predicated on the idea that for a divergence trade to occur, there must first be a trend to diverge with, that is all. If the move is not enough to pull ADX above the threshold, then the divergence signals will be more suspect.