Practice guidelines for early childhood education (ECE) and clinical autism interventions (Naturalistic Developmental Behavioral Intervention, NDBI) have emerged separately in history, represent different disciplines, and operate within different service systems in the United States. This article identifies priorities, principles, and practices that are shared across the NDBI and ECE frameworks, unique to each framework but compatible with the other, or in conflict. Both frameworks support converging inclusive ECE models focused on autism in that they are both grounded in responsive relationships, natural learning environments, and strategies to promote children's motivation and active engagement. While compatible in general, each framework extends the other in important ways. For example, NDBI goes beyond the ECE frameworks by focusing on a more fine-grained examination of learning strategies and targets. Opportunities for bridging gaps are identified, including the use of implementation science frameworks to integrate perspectives from different stakeholder groups, supporting the scale-up of inclusion preschools in community settings.