This music from Stargate SG-1 sounds a lot like Fisherman's Horizon from FFVIII

While FFVIII does have a history with possible OST plagiarism (mostly from Hans Zimmer's "The Rock"), the example you posted is only vaguely similar, if that.
 
There are definite melodic and harmonic similarities but they're almost certainly unintentional. The odds of Uematsu being familiar with underscore from a random Stargate SG-1 episode are quite low.
 
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