I didn't see the NZ second innings but I did see a bit of the first.
I found it a very odd tactic that, having got the top order out bowling full, they switched to trying to bounce out de Grandhomme with the score at 36-5. He pulled the short stuff easily, it got him going and the ball lost whatever shine it had left. Why not more of the same, at least while the ball was still newish? Who made the decision to do that? There seem to be a lot of cooks in the broth and it's hard to see who is pressing the buttons - Silverwood, Bayliss, Farbrace, Root, Wood, Anderson, Broad. Whoever it was they should have noticed quicker that it wasn't working.