To have two statements be in conflict, they have to be about the same thing. The statements “Kansas is a civilized country” and “Peacocks are sacred to Juno” aren’t in conflict because they’re about different things. The common topic is the theme of a literary work; and making different statements about that topic is the exploration of that theme. It’s not “argument” in the technical logical sense, though it might be “dialectic” if it explores the logical and evidential grounds for the different statements (that is, the possible arguments for them).
But this can be tricky. Arguments presented by the characters in a story or play are the arguments of those characters; they may not be the arguments of the author. And even if they are, they’re being made because it suits the needs of the plot or characterization to have those particular people present those arguments in that way at that time. They may or may not be elements in a logical argument presented by the author, and the author may or may not even have an argument to present.