question: pairing store coupons with manufacturer coupons?

I have a Loblaws company store coupon for HighLiner Pan-Sear Selects, taken from the coupon board at my Maxi store. I also have a manufacturer's coupon, cut from SmartSource.

I am wondering if I can use both the store coupon AND the manufacturer's coupon at the same time, on the same product?

A lot of stores will let you, and yet some won't. What is the fine print on the back of the coupon zone one? Sometimes they can be sticklers if it reads cannot be combined