This comprehensive analysis examines the contrasting development patterns, production performance, and infrastructure challenges between the Legacy Haynesville and emerging Western Haynesville regions. While Legacy Haynesville currently dominates production volumes with established infrastructure, the Western region (comprising Robertson, Limestone, Freestone, and Leon Counties in Texas) demonstrates significant growth potential and competitive well performance. However, this potential is contingent upon critical midstream infrastructure development to overcome higher costs and execution risks associated with the high-pressure, deep reservoirs characteristic of the Western region.