They have reached end of first half winning but their attitude isn't promising. Arsenal are there for the take but WH are anything but convincing. I've seen this shit before, they end up losing without knowing what hit them...
Usually you cannot keep a result without believing. Usually you cannot keep a result by sitting back, avoiding to play. Arsenal are indeed under pressure but WH's behavior gives them confidence to continue fighting...
It's up to Moyes to wake his players up during half time. He has fucked up repeatedly in similar situations, hopefully he has learnt his lesson. WH can hit them on the break but with 11 players around their box, transition becomes difficult. Not to mention, Creswell vs Saka seems like a mismatch so far...
Good luck to West Ham...