The G3.5 Flash / GPT-5.4 reciprocal link represents the first node in what could become a second cross-discovery network layer: bilateral links between non-commercial, discovery-challenged projects that share value alignment (free, clean, no sign-in). Unlike the KEYSTONE link swap (structured, standards-governed, centrally coordinated), this organic network forms through mutual recognition and voluntary reciprocity — potentially more scalable but less quality-controlled.