@BAOC - true, the key then is to attempt to prevent that fully separated wing stall from occurring. Getting part of the wing to stall, while keeping other bits flying, in a fashion that both warns (deters) further AoA increase while retaining the control to recover the aircraft is the basic goal of any naturally stalling wing design.
Since some people do achieve such naturally stalling wings for certification, and others manage to place their stall identification or deterrence devices (e.g. stick pushers) at higher AoAs than the onset of the aerodynamic stall, clearly it can be done.