Originally Posted by
cyccommute
If the derailer hanger gets bent, it could overshift into the spokes but the derailer is likely to rub (or catch) on the spokes before it would overshift.
Exactly. I had this happen to me once - the bike fell over and bent the derailleur hanger in the process. I didn't notice it being bent at first, and when soon after that I tried to shift into the large cog, the derailleur cage got caught in the spokes and the hanger snapped in two, while the chain didn't move past the casette.