What does the term "connection" refer to in aviation?

In aviation, the term "connection" specifically refers to a change in aircraft that is required for a passenger to reach their final destination. When traveling on a multi-segment itinerary, a passenger may take one flight to a connecting airport and then transfer to another aircraft to continue their journey. This process is essential for accessing destinations that may not be directly served by a single nonstop flight. A connection is typically indicated on the passenger's itinerary, highlighting the importance of coordination in flight schedules, gate assignments, and timing to ensure a smooth transfer from one aircraft to another.

Other options might discuss related concepts, but they do not accurately encapsulate the specific meaning of "connection" within the context of aviation travel and itinerary management. While a flight route describes the general path between two locations, a specific airline response protocol outlines procedures for airline personnel. Additionally, a layover period refers to the waiting time between the arrival of one flight and the departure of the next but does not inherently imply a change of aircraft. Therefore, the correct understanding of a "connection" revolves around the necessity of switching aircraft to complete the journey.