This is very interesting (and surprising):
http://hockey-graphs.com/2015/12/01/rebounds-extended-zone-time-and-the-quest-for-more-offense/
I suggest reading the whole article; I only posted the conclusion.
Is it ultimately suggesting something along the lines that from a goalies POV sustained offensive zone pressure does not generate higher scoring chances? Would make sense to me considering a goalie is likely not wearing down in the same sense that the forwards are.
Maybe more shots against but I wouldn't expect more rebounds simply because from the goalies POV a shot 5 seconds into zone entry vs a shot 35 seconds into zone entry doesn't really equate to a higher % chance.