I've occasionally found it advantageous to be underestimated. I imagine it's been a while since you've been able to use that strategy.

In any case, I will not make that mistake with Hydra.

I had not realised that Antonin volunteered himself to lure the Longbottom girl. That's quite interesting. I dimly recall he had some sort of appointment with Aurora, that evening when all the traitors turned up at the school. Or so he said.