While almost any conversational turn by addressee can serve as the reference turn for a connective-initial turn by a self-selecting participant, a preceding turn by Alter was used in a more restricted set of circumstances, such as: […] If Alter has misreplied, in Ego's estimation, either through misunderstanding or contradiction, to Ego's preceding turn, or if he has emphasized the wrong aspect or presupposition of Ego's turn;
Source: wiktionary