I have not tried to use a warranty from Gander Mtn or ever purchased one.
It seems that when you buy anything anymore there is the extended warranty pitch. I wonder they are verbally sold as an addition but in reality they are what you encountered?
If that is the case, it is quite the con game. Who knows, maybe the clerks don't know any better but why buy the warranty if it doesn't extend the original? Duh!
It smells fishy for sure.
Thomas Jefferson, 1774 July. "The God who gave us life, gave us liberty at the same time."
Life Member: NRA, ISRA; Member CCRA