An effects (or results) of events, are not themselves an events that cause the effects (or results) .
I do not think so.
Canceled may be ongoing or declared effects, not implemented.
Searching Eye may cancel an ongoing effect like effect of Stealth. The effect is not implemented to a company, rather a company is under this effect.
Searching Eye may not cancel a result of a resolved Concealment (cannot reactivate already canceled attack).