Good questions.
Unless they are taking the plywood off with a cordless drill in a part of your home you cannot hear, or they are hoping you dont hear, I think them taking one through the window would be a real possibility.
Or wait for them to be halfway crawling through as their hands will be more occupied.
And, how many will be expecting trouble? I posted an article about two guys forced their way into some guys home. The one intruder got a few hits to the head from the owner.
The other one, the home owner shot him dead.
Since things went on lock down, as I type this, there are two KA-BARs within hand reach and a bolt rifle.