I don't think the NFL preseason games that are broadcast on ESPN or the major networks (nat'l games), are re-broadcast on NFLN.
Next week's game is live on NFLN, I think.
Where at in Canada? No ESPN at the local sports bar?
I'll have to check my guide tonight, but Monday when I checked, the Steeler game isn't on here. If it isn't on here, I'm guessing it isn't on in other markets (Is it only on in PA and AZ?) which means it isn't a national game and would be replayed on NFLN. Maybe if I could remember which game was on here, it would help, but I don't.