Research shows that caregivers of children with autism can be taught a variety of behavioral strategies, but there is little research on teaching caregivers to prioritize rapport building over skill acquisition during play. The current study evaluated the effects of a digital training package on the rapport-building skills of four caregivers of children with autism. Target skills were derived from parent-child interaction therapy with specific adaptations for children with limited communication and play skills. The intervention package included asynchronous online modules with video models, active response opportunities, and automated feedback as well as synchronous feedback via video chat. All four caregivers demonstrated increases in rapport building skills, and three of four dyads showed increases in interactive play postintervention. Caregivers also rated the intervention favorably. Data on participant and interventionist time to complete the intervention guide a discussion of the efficiency of combining asynchronous and synchronous strategies.