A cleanly triggered A.M. bias signal at 10:15 or P.M. bias signal at 1:20 can be invalidated at the bottom of the hour at 10:30 or 1:30. This is also the grace period window that can be invoked, but invalidation does not require invoking it.
A cleanly triggered BIAS-UP at 10:15 (or 1:20) will be invalidated if that signal’s probe has been reversed at 10:30 (or 1:30). If the grace period was invoked, then reversing the probe at 10:30 (1:30) would trigger it LATE. Otherwise, reversing through 10:30(1:30) simply invalidates the signal that did trigger.
A cleanly triggered NO-BIAS will be invalidated if a bias signal is probed at 10:30 (or 1:30).
Touching or overlapping the signal at 10:30 (or 1:30) will not qualify to invalidate a cleanly triggered signal.
The invalidated bias window will not put into play a target or objective, and it will not require being contained between its bias signals. The bias levels may still be responsive if tested, but their test will not require a consequence or earn a reward.
A no-bias signal can be invalidated at 11:30 beyond a target, being too late to simply exceed its signal at 10:30. A bias-up/down can be invalidated at 11:30 beyond its opposite signal if the 10:15 signal was never further productive (otherwise, beyond its opposite target).