do link skills stack?

I don't see how you could get "23 mercedes" from "A Kaiser and a Cannoneer" but okay

I don't get how you couldn't see how he got it, seems rather obvious and even @TakerBacker; got it, but okay.

Well, I was doing some homework and didn't pay atention at all

You don't have to excuse yourself, everyone messes up. Baffles me why someone think it's relevant to point it out other than to be a fucking jerk.