question on using thunderblow with smite/sweep against multiple figures, or a cavalry unit

example: Drakor with Rage Hammer (gives smite) against EF SkyDragon and Scalesworn Honorguard ***
first roll 8 - hits both
second roll with thunderblow 10 - hits both
third roll with thunderblow 4 - hits Skydragon but not Honorguard

does the atack resolve against rider and mount for 6 damage, or can I continue atacking the SkyDragon

T-blow only affects one figure. It cannot be used against multiple targets.

thanks

I should have checked the SAC first

thats not all, because smite is a single target, (it says choose 1 target, and if it hits, blah blah blah...) but you cannot tblow and smit cuz they are both GIVE actions