Final answer:
The exact length that the connection between a carrier/lifeline and a body harness should not exceed was not provided. It is important for safety that this length be minimized to reduce fall distance and shock load, with nylon climbing rope being an example of minimal-stretch material that would be suitable for such connections.
Step-by-step explanation:
The connection between a carrier/lifeline and a body harness is critical for safety in activities such as climbing or working at heights. The connection should not exceed a certain length to ensure the individual's safety in case of a fall. Although the exact measurement was not provided in the question, typically in safety guidelines, this connection length is limited to reduce the fall distance and to prevent excessive shock loading on the body in the event of a fall. When mentioning nylon climbing rope, it is noted that it does not stretch much, suggesting that any connecting device or mechanism should similarly have minimal stretch to maintain overall safety.