It's a corridor connection (or gangway connection) - a flexible connector fitted to the end of a railway coach to enable passage from one coach to another without falling out of the train.
an alley. A narrow passage between buildings or parts of different buildings is also called an areaway.
"Chuck Wagons" other wise known as "Prairie Schooners"
A person who makes and repairs wagons and carriages is called a Wainwright. A wheelwright makes wheels.
A narrow passage between two mountains is often referred to as a gorge or a ravine.
Rape Trains built by Robert Cole Metcalf
Someone who builds or repairs wagons/carts is a "Wainwright"
It is not wagon trains. Groups of covered wagons are called prairie schooners. But we can also call it wagon trains, I guess.
Train Passengers.
A passenger train
The word 'line' is a collective noun for a line of vehicles. Another collective noun is a fleet of vehicles.
The engineer runs the train.
Chew chew train.