When the server keeps returning 503, Qwen Code's default retry behavior is: the OpenAI SDK retries three times per attempt (backoff of about 0.4, 0.9, and 1.8 seconds), and Qwen Code's own retry loop repeats these groups at intervals of about 2, 3, 7, 14, 30, and 30 seconds, so seven groups totaling 28 requests take about 107 seconds, after which the CLI prints Retrying in 60s (attempt 1/10) and starts a new round.