Interesting thread. Both horses will take their cue from me under saddle, doesn't matter lead, middle or drag.
In their paddock or pasture, well I'd have to say, they are both quite dominant. T does seem to look to Walka more and more for the old "relax, everything's ok",probably due to sight loss. Although she still grazes near or away from him equally.
Wonder if both could be alpha's? Certainly seems that way in their own special ways.