Supplementary Materials for: LLM-Based Multi-Agent Orchestration: A Survey of Frameworks, Communication Protocols, and Emerging Patterns

Supplementary materials for the survey (MDPI Future Internet, futureinternet-4320172). v2.1 corrects an internal citation byline. Includes Study A (MAST-Data cross-framework analysis: extraction pipeline + CSVs) and Study B (CrewAI cross-backend harness, 108 live runs across DeepSeek-V4-Flash and Gemini-2.5-Flash), plus PRISMA logs, per-reference evidence-tier ratings, and the machine-readable orchestration decision framework. All numbers in Tables 4b1, A.2, C.1 are recomputable from these files.