AbstractThis article contributes to the attachment versus differentiation debate, bringing the conversation to parent–child relationships. While attachment theory's (AT) approach emphasizes bonding, Bowen family systems theory's (BFST) differentiation approach emphasizes emotional boundaries. They both suggest that balancing autonomy and connection is important, but AT conceptualizes this in terms of the parent's ability to meet the child's needs for autonomy and connection, while BFST conceptualizes this in terms of the parent's and child's ability to be connected due to mutual respect for each other's emotional boundaries. They similarly recognize that: (1) emotionally mature parents respect children individuality, (2) emotionally immature parents may project their needs and wishes onto children, and (3) emotionally mature parents focus on calming themselves to help their children to be calm. They differ in that: (1) BFST suggests that children may project their needs and wishes onto their parents and intrude on their parents' emotional boundaries, and AT does not conceptualize this; (2) BFST suggests that caregiver over‐involvement may be experienced as positive for a child and program them to be excessively needy, and AT suggests that caregiver over‐involvement is negative for children and neediness is caused by under‐involved caregiving; and (3) BFST suggests that therapists should not try to be a parent to their clients as this can replicate the fusion that the client experienced with their parents, and AT suggests that therapists should try to be like a good parent to their clients to help them to develop more secure attachment styles.