Originally Posted by jrl767

(3)- This final trip is a bit more involved in that the “Great Circle” condition for getting to each of the first two destinations involves three flights. You’ll be using the two remaining smaller airports, starting at one and finishing up at the other. One of the destinations on this itinerary was a connection point on your second trip.

The first day repeats two airline / aircraft instances from the second trip; the other airline is a repeat from the first trip, but it’s a new aircraft type. You’ll be seeing each connection point for the second time.

The second day’s journey begins with an airline from the second trip operating an equipment type from the first; both the other segments are on a first-time airline, with one new type and one repeat.

On the third day, you have another example of the type from the first trip; however, it’s on another first-time airline. The second flight also repeats an airline from the first trip (as well as earlier on this one), but on yet a different jet. This itinerary has a bit of a backtrack, as the destination lies very close to the Great Circle track between the origin and the connecting point.