Three points I would like to throw into the chat –
The inertia of a large aircraft acts in the pilots favour when stretching a glide (the opposite is also true if you stuff the nose down in an attempt to trade height for speed).
Modern swept wing airliners will have a lower lift curve slope than a modern glider and so can be expected to have a more progressive, gradual and benign stall.
While there are several reasons why airliners are certificated to fly the approach at 1.3 times the stall speed it does mean that there is a bit of slack when it comes to stretching the glide.