Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.1030 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)

"Unfortunately, the airlines have used the definition of a through flight being aircraft with the same flight numbers, regardless of whether one changes aircraft or not."

Actually, I thought that the airlines (and the OAG) refer to that as a "direct flight." Do the airlines even use the term "through flight," or is that merely a lay term?