If you look at a Bus Map of Orpington, South London, the R7 and R9 are "loopy":
Google maps mostly suggests other routes, and the R9 route includes an unncessary walk:
Citymapper same thing:
TFL Journey Planner gets it 🥳:
There is also a Sutton loop line railway:
Citymapper has more walking:
TFL wants you to change train:
Google wants you to change train or walk:
National rail says change train, but it's the same train, so it's better, but it could do with a note:
