Its strange.
Rangnick himself said pre-match he couldn't just expect the players to become pressing monsters overnight. He specifically brought up the example of Klopp's first season when Liverpool got tonnes of muscle injuries, just because he was trying to switch to a pressing style midseason.
We can't yet expect our players to be able to do what they did first half for 90 minutes. They need time to get used to it. However, its impressive that with basically one training session they managed to execute the gameplan so well for so long. With how Rangnick trains forward play and decision making under pressure, I expect us to get better at capitalising on the moments when we have teams boxed in as time goes by.
I'm pleased by the start we've made and positive about where we might go from here.
Exactly. Barring one set piece Palace didn't get change out of us. Which is a HUGE difference from what we've seen this season, where any team has been able to drive a coach and horses through the middle of us at will.