Following the ‘discursive’ turn in family therapy, the attention of practitioners shifted towards understanding how culture and language shape meaning-making in therapy. In this article, we demonstrate how conversation analysis (CA) can be used to examine the processes and outcomes of systemic/constructionist practice. We used CA to study collaborative interactions of a renowned constructionist therapist Karl Tomm and one client–family. Viewing collaboration as a pivotal aspect of the therapeutic alliance, we demonstrate how the ‘split’ within-system alliances were developed and sustained in the course of therapy and how they were discursively transformed into ‘intact’ alliances. The therapist's efforts to align with perspectives of family members (and subsystems) seemed pivotal in this process.