Brentford defence is really solid to have held it down till the 88 minutes before arsenal saw the back of the net. They've really made arsenal sweat to get a goal, though Brentford hasn't been converting their chances, if not they would have been able to get a goal or two by now, but their defensive style has really been impressive. The Brentford attackers haven't shown much Impression.
Brentford's defense was indeed very extraordinary in this match even Arsenal were quite frustrated to face the tight defense by Brentford but indeed Brentford was quite weak at the crucial time and it happened 2 times in this match because at the end of the first half Trossard also scored a goal even though VAR disallowed the goal but from here we see the concentration of Brentford players a little reduced when the crucial time.
The second half was also the same they performed well, it's just that in the last 10 minutes of the match Brentford's performance returned to the same as in the first half and Kai finally scored again for Arsenal.
This is good for his confidence especially with a lot of criticism he received at this time Kai finally became the winner and brought Arsenal to the top of the standings for a while.