Obtaining an opposing party's waiver of their right to pursue legal remedies is not the same thing as obtaining non-binding indication that they may not pursue

Obtaining an opposing party's waiver of their right to pursue legal remedies is not the same thing as obtaining non-binding indication that they may not pursue you legally. In the first case you have extinguished a right that could be used against you. In the second case you have obtained nothing more than the illusion of safety.