Marco (42) and Luca (38) are estranged adult brothers who have not spoken in 10 years following a dispute over their father's estate. Their mother Marlon (70) has been diagnosed with a terminal illness and has asked the therapist to see both brothers together for 'one last chance to fix this.' Both brothers agree to come to a single session under the condition that the other attends. Neither brother acknowledges any responsibility for the estrangement. Marco begins the session by saying, 'I'm only here for Mom. I don't need Luca, and he doesn't need me.' Which intervention represents the MOST systemic Bowenian approach?