Price action is not allowed to pursue opposing objectives simultaneously, so there are windows when a reversal attempt is is disqualified from triggering. Examples include a session that makes a new trend extreme being disqualified from also triggering a reversal signal. Also a signal or reaction limit being allowed several minutes of counter-trending may not trigger a reversal signal during that window. Separately, some timing windows are disqualified from neutralizing unfinished business, or from forming a setup.