Door is still open for Williams and Henson, insists Gatland
Williams, 35, is just two caps short of reaching 100 for Wales, having made his Test debut in 1996. But Gatland has preferred Sam Warburton and Josh Turnbull as openside flanker options for the Six Nations campaign.
Centre Henson has started his comeback with Saracens after 20 months in the rugby wilderness, although he is currently sidelined because of a calf muscle injury.