Originally Posted by
FBinNY
In all the cases that I've seen, the rear wheel ends up overrunning the cassette as the rider realizes what's happening and tries to stop.
You might also keep in mind that the cassette cannot ever overrun the wheel.
In that case, I bow to your greater experience.
And I'll try to keep my rear derailleur adjusted. (The last time I tossed a chain into the spokes, the derailleur was really, really worn.)