Read this order
Mountain → Rider: An obstacle or delay may arrive soon.
What changes in reverse?
Rider → Mountain: News or an arrival is delayed. Movement is present as a theme, but an obstacle slows it down.
Rider → Mountain ↗A practical example
A visitor unable to reach you because transport is delayed is a literal example. For a question about news, the same pair can concern a late update. Movement is the topic; the barrier changes its pace.
Check it against your question
Keep the actual order and ask which part of the example fits your situation. An example illustrates a possible reading; it does not establish facts or promise an outcome.
The meanings behind the pair
Mountain: Mountain is a substantial obstacle, blockage or delay. It shows where movement is difficult; other cards may indicate whether a route around it is available.
Rider: The Rider brings news, a visitor or a new arrival. It usually adds movement and a relatively quick pace.
These examples show possible ways to read the pair. Your question and the other cards may change the meaning.