“How is it any different than the Choson holding the Kallah’s hand when walking away from the Chupa (as some Litvaks do)?”
I’ve seen someone write that’s assur too, but it can be argued that that is only utilitarian – so as not to be ????? bet chupa & Yichud – and isn’t being ???? ???? or anything to do with ????.
A similar argument would have to be made by proponents of ???? ????, but I haven’t seen it written.