4 points
I think they were more referring to how knowing Spanish, a Latin-based language, can help in learning another Latin-based languages.
English is primarily Germanic-based so it falls out of the category for the most part.
6 points
I think the REAL “cheating” example is Spanish & Catalan.
I took 5 years in HS/college, and when I was in the Barcelona airport, I actually asked “why is everything written twice?” The differences seemed very very minor.
But I speak english poorly, and spanish… not really. So she’s still 700% better than me!