i'd guess yes, to bring the size down to hunt very thick cover.
Also maybe the spaniel may mean they range less far.
Terrier blood might add a little bit of fire too.
I breed my russell bitch to a beagle x to bring the size up abit stop them going to ground
so there faster in cover to drive there preay out looked at diffrent x but for me the beagle was the best
lots of fire character and a great nose plus you dont have to wait all day for them
they have made 17 to 17 and a half tts racey type's