I have a gnome ranger beast master who uses his wolf companion as a mount. Now the feat allows the mount to receive no damage on a successful dex saving throw instead of taking half in case they are subjected to an area effect that allows such a save.
Does this mean if the gnome is riding the wolf when such a check is required (like a fire breath or an explosion) then the gnome can arguably be considered to have succeeded the check too and also receive no damage?
Come to think of it... I think my question applies not just to my gnome, but also to anyone riding a regular mount