Can I get comedonal acne even though I use non-comedogenic products?

Acne from cosmetics. Yes. Many factors contribute to acne: hormones, oil production, pore clogging, bacteria, & inflammation. While avoiding poor-clogging comedogenic products is helpful, "non-comedogenic" simply implies that the product is not likely to cause comedones in most individuals... Meaning that if your skin is not like "most" then it could still breakout from the product or another factor causing acne.
Yes. There are many factors that will effect your predisposition for forming comedones. This includes other aspects of your skin care routine including exfoliation and regional hair and skin differences.