The "lead " in T/ Arg. may also be led thru the hands and arms ( as in a Salida ).
It depends on WHAT is being led. In addition, the lady sometimes initiates lead .
To add a little more confusion.. it also depends on the "style " one chooses to dance..
The approach to Tango Nuevo and a Milonga style , are conceptually different in some respects ( particularly the embrace ).