continuity - Why does Ender think Bonzo was the one who had made Ender jump through the gate immediately?

When Ender is observing Rabbit Army's instantaneous emergence from their gate during Dragon Army's their first battle, he thinks to himself that this was learned from when Bonzo Madrid had done this to Ender.

In the distance, in the dim light, he could see the enemy door, their lighted flash suits already pouring out. Ender knew a moment's pleasure. Everyone had learned the wrong lesson from Bonzo's misuse of Ender Wiggin. They all dumped through the door immediately, so that there was no chance to do anything other than name the formation they would use.

But it was really Rose da Nose who had made Ender emerge as soon as the gate opened.

"Shivering? Trembling? Don't wet your pants, little Launchy." Rose hooked a finger over the butt of Ender's gun and pulled him to the forcefield that hid the battleroom from view. "We'll see how well you do now, Ender. As soon as that door opens, you jump through, go straight ahead toward the enemy's door."

So why does Ender get this mixed up?