It is much more interesting if Bates dunnit. The logistics are painful but I definitely think it's possible.
Srsly though, CSI Downton is clumsy, and the unending prison visit scenes are getting tedious. I'm surprised Anna has that much time off, tbh, even now she is a lady's maid rather than a housemaid. And while we are at it, who is dressing Edith?
It's like JF had a really good idea for the Bates storyline, then during scripting meetings for Series Three someone said "erm, but that's impossible because..." and now they're patching a story together which might not even get resolved this series. The stuff with the bent screw is boring.