The Connect Walls command only works on 1 wall at a time. If the users need to extend multiple walls to touch another wall, the user must click the same wall multiple times. We should strive to match the workflow available in the Trim to Element C...

Provide 3 options to all cut elements in a view: No fill, solid fill (black or gray), or original fill, instead of the current system which only shows the cut fills defined in the Part/Family system