Please see my thread here, i believe they are related_satellite.isSubdomainOf produces false positives and affects _satellite.isOutboundLink This seems to be a defect in _satellite.isSubdomainOf
The first one is probably a 302 redirect, check to see if that's the case. The second would result in a HTTP Status code of 200 if this is true. If so, this isn't firing twice or duplicating data, its just redirecting in google.