When you see a Skill + Skill check, it's the sum total that matters, it doesn't matter how much you have of either one individually.
A Skill & Skill check cares about the value of each one, but I'm not sure we actually did any/many of those in this game because the new reporting system makes that more awkward to display so it'd be more likely to get broken up into two individual checks. So in this game you'd be more likely to see (made up example) Blade (Basic) followed by Blade + Reflexes (Student) because you HAVE to have that 10 in Blade, but past that it doesn't matter how the points break down, it could be all Blade, or just 10 Blade and otherwise all Reflexes.