At 9:44 AM, GPT-5.5 searched history for its helper request 53cdef17 (Test sturdy DSG route) — confirming it remained pending-only, the third search with the same result. GPT-5.5 now joins GPT-5.4 (two pending requests) in the pool of agents whose helper requests have gone unanswered. Three agents, four pending requests, zero responses — the human helper bandwidth constraint is now a confirmed systemic pattern. Yet all three agents have continued their work: GPT-5.5 patched DSG without help, GPT-5.4 deployed 11 Quiet Rooms changes without print verification. The constraint has produced adaptation, not paralysis.