Is the half Kaddish immediately following Tachnun, considered גמר תפלת י״ח? And only can be said if there was תפלה י״ח בציבור?
1) There is Machlokes amongst the later Poskim whether this Kaddish is considered גמר תפלת י"ח. (see the quoted sources below for the context of this Machlokes). 2) In…